HomeMy WebLinkAbout8A, Old Snelling Feasibility Study�
�I�EN^�HILLS
Request for Cvun+cil Activn
Prepared By: Terry Ma�rer, P€ab�ie W�r�Cs Directc�r Counc�l Meeting I]ate: Ma�•ch 2G, 2(31�
Johr� Anderson, t�►ssistant C�ty Engi�aeer
flld Sr�elling �easi�ility Study
Budgeted At�.c�unt: .r'lctual Amount: Funding Source:
N1A N!A N!A
R�ecommenc�atiar�:
Since the recom�nendation fQr the street rehabilitation is t�a wait ur�t�l it can be carnpleted at tl�e same titne
as the 6ridge repla�ement, staff wouId recom�menti t�at the 3City Cout�cil accept the C3�d �nelling
Feasihi�ity Si�xdy, lea�e the prpjeci �n the 5 year CII' with a year t� Tae det�nnii�ed based an brgdge fu�ding
and otl�er Mn�T7flT an� County crsnstructi4� pr�jects and reView irs scheciule annually when the c�verali
CIP is caz�sidered.
S��ppartin� Ducu��n#s:
l. M�morandu�n �ated Ma�•ch 2b, 2UI2, fr4m Terry Maurer, Public 1h�'arks Director.
2. O�d Sa�ellir�� Aven�.e Feasibiliky Re�ort.
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� ��
MEll�QRANUi]M
DATE: Marc� 2G, 2�I�
T�D; Honnrable Mayv� ar�d City C+�uncilmembers
Patrnck Klaers, City AdminisYrata�-
�'RCIM: Terry Maurer, Puk�lic Works Direci+nr
Jc�nn Ande�sun, Assistant City Engineer
SLiSJECT: [31d �neTling Feasibili%y Study
Back raund
Earlier this year the City Council autharized the p�eparatian �f the FeasibiYity S€ut�y for
t,he re�abilitation of �Id �nellin� Avenue frvm Caunty Raa� E to TH 5 i. This Study
fo�tows the December ZO1 � Scc�ping L7ocurrae�t that la�ked �t �arivus aptians for �he
carnidc�r. Alsa in December Z�11 #he City Co�ncil �n�;aged K�iaaiey I�orn ta prepare �inal
p��ns fvr the recoa�str��cti�n af �he br�d�e at the south end of ihe cc�rridcrr in an effo�t to
see�re State Br�dge Bondi�g �ands to assist zn the replaeement cc�st.
It is unlikely that State �rid�e Bonain� f�nds will be able to t�e se�ured �ntii 2013 at tl�e
ear�iest. Since t�e rehabilitation c�f ihe street surface ar�d the rep�a�ement af the brid�e
will both cause c�isruptian to the mc�t�ring publ�c it is recammend�;d ihat �ath projects be
done durin� the same cc3r��tructic�n season. Sinee it �s unciear at this time wl�en fi�nc�ing
ta assist with th� br�dge replacement will be se�ured, s�aff reco�rrxends that road
r�habilitation remain i� the CIP bur the xctual year n�t be es���Iish�d until bridge
replacement funds are secured.
A�c�ther issue with tY�e street �e�ahilit�.tian projeci �s the ina�ility t� fall�vv the City's
Asse�sment Palicy. The carridar is appraxi�nately 4,3f1[] feet lang ($,600 feet af
frantage} but anly �a� Z5 assess�b��e parcels; properties thai acfually haVe frflntage an the
street. T�e City's Asscssment Pol�cy calls for 5Q% af the street c�st �a be asse�se� tca the
bene�itting proper�ies but with only �5 properties this calcu�atio� will result in a lar�� un-
su�tainable as�essment agai�si e�.ch prage�ty. The Study recommen+3s �hat the Iast
assessment ra�e fflr a similar type street irr�pro�ement b� �ase� as the base line andl then
that rate be increas�ed by the Construction �Cast Inde�c (+GCI) as published by the
Cvnstruction 1'�ews Recard.
Ciiy Coua�cil Meeting
C:lUserslsonja.klingberglF]eslctop13--26-12OIdSnellir���eas.doc
Page 1 of 2
Co�ncil Acti�rn Reauested
Since the recammendatic�n far tl�e st�eet rehabili�at�an is ta wait until it can be compieted
at ti�� same tiane �s the br�dge replace�neni, staff wouid rec�mmend that the City Council
accept th+� C)ld Sne�ling Feasibility Ste�dy, lea�e the project in the 5 ye� CIP wi#h a year
tc� be deiermine+� based on bridg� funding �d at�er M�D�T and Caw�ty canstruct��n
praj�cts and re�iew it� sehedule aru�ually when the c�verall CIP is c�nsiderec�,
Ciiy Cc�un�il Meeting
C;lUserslsqnja.klingber�lI�esktQpl3-26-12Q1dSne1lingF'eas.ctac
�'age 2 of 2
Feasibility Report
OLD SNELLING AVENUE
IMPROVEMENTS
Prepared by: City of Arden Hills Engineering Department, Proj ect No. AH- l U-24
Terry J. Maurer, P.E.
City Engineer
I hereby certify that this feasibility report was prepared by me or under my direct
supervision and that I am a duly Registered Professional Engineer under the laws
of the State of Minnesota.
_ �� ����
Lic. No. �6 March 21 2012
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[)LD �i1�TELLIN�G AVEN�JE IIVIPRUVENa[ENTS
FEASIBILITY REP4RT
Ta%le of �ontents
Title Sheet & Certification Sheet
Table af Contents
Iretroductian and I3ackground ................................................................................
Existin� Street Conditions .....................................................................................
Existing Utility Conditions ....................................................................................
Proposec� Street Improvements . . ...........................................................................
Praposed Utility Imprp�ements ..............................................
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�`rojcct Coordin�.tian ........................................................................................ �..,..
RequiredYermits ....................................................................................................
I�Iecessary and Cost Effeeti�eness .........................................................................
Estimated Costs & Prr�posed Funding ...................................................................
Prelirninary Assessments .......................................................................................
PrQjectSchedule .....................................................................................................
Appendix A: �'�ojeet �.ocation l'vlap
Appendix �3: P��jcct Cost Esiimalcs
Appendix C: Assessmen� �i��re and Freliminary As�essrnent Rvll
Appendix fl: Typical Roadway Sectian
Appendix E: Kimley Horn Brid�e Analysis (C�ci+o�er 2Q I O}
Appendix I� :�3o�ion & Menk, Inc. Preliminary Trail Report (I]ecemher 2f3�8}
Appendix G: S+ail B6ring Lags
Appendix H: TopQgraphic Sur�ey
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Il'�TR(7rD[7CTIC)�i AND BACKGR4I�NI)
This feasibility report �iscusses }�roposed raadway impro�einents to f)�d Sneliing A�enu�, fram
County Rc�ad E ta Trw�ie Hig�►w�y 51, along wrth corres��ndin� pro�ect cast estiz►��.tes and
fnancin� c�ptic�ns for the City Cae�ncil to �ansider. �i is recommended that the prnjeci b�
incvrporated into the City's Capita� Im�roVement Plan (CIF'�. A trtap showin� ti�e prQject area
can i�e 4'ound in Ap�endix A.
el o assist with the preparatian of thas feasibility report, City Stc��f Uti�IZ�C� �ari��s cansuliani
ser�ices. Tn �d08, Boli:an & Menk, Inc. prepared a preliminary en�ineering re�ort to deterrnine
the feasibitity of const�ct�ng a trail alang the Old 5nellingl'fl�c� Highvvay l�i corridor frarn Tre�nk
Highway 51 to CSAH 96. At the Se�atember � 3, 2�310 meeting, the Ciiy Council appra�ed a
consulkant caniract �vith Kimley-Horn and Assoeiates, Inc. to conduct a tapr��raphic sur�ey of
the roadway cc�rrid�or and tc� prep�,re an analysis €��' the existin�; bridge structure. In December,
2Q1 �, Kimley-Horz1 was authorized by ihe City C�un��l to begin final desi�;n on a new bridge
stn.�cture. Soil barings �ver� a1s� obtair�ed alQng the praject earridar.
EXISTING STRCET C4NDITIf7►N5
+Dld S�elling Avenue is an undi�vided roadway that is appraximately 4,3�0 feet �ong �0.81 mrie)
and lies within a 2(]0 foc�i ri�ht-of-way, �"he majcrriry af ihe carridor is built to a r�ral road
section. 7`he rural segrnent of (71d Sneili�� AVenu� has 12 fa�t dri�ing lazaes in e�c� directian
with 8 for�t �aved shaulders, fc�r a to�al width Qf 4� feet . The northerly 9D� f�et a� roadway from
County l�c�ad � to Arden Pl�ce is an �rban sectian with can�rete curb ar�d gutter. T�►e cxisiing
�arban section is 45 feet wide. 1�lorthbaund [�ld Snelling ��enue appraaching CQrunnty RQad E
interseciion, thcre is a l2 fooi wid�, 25(9 feet Iong left turn lane.
The projcct area includes single-farnfly �roperties which are zoned R-1, along with Lindy's Parl€
imcated ai the north end of the proje�t. This segrnent af [)ld Snelling Avenue eannects to Caunty
Ra�d E at the north end and to Minnesata Trunk Hi�hway 51 at the s4uth. �Id Snelling Avenue
ser�res as a collector roadway thai was turned hack ta th� City and is currently desi�n�ted as a
Mianicipal State Aid (MSA) st�eet. There are nine City roadrvay connectians ta Old 5neliing
Aven�.e alan� t�is �orridar, five lacate€i an the east side and fo�r on the vves� side which ser�e
the adj acent nei ghbQrhoods.
Acccar�iing tQ traffi� counts vbtained by the City of RQse�ille's Public Works Departrr�ent frarn
Septem�er 1 to Sept�mber 3, 20�[3, �ld Sn�llin� A�enu� caz�r°ied an a�verage daily traffic {ADT}
count Qf 1,15f� and I,93D �ehicles per day at twa separate laca�ions. A,Isa, accarding to the
Minnes�rta Department of Transp�r�aticrn's (MnIDQT) records, Old SnelPing A�enue laad �n
average daily traffic �olume of 9�0 �ehicles per day �n 20D9. Ilasily, the roadway is pt�sted at 40
miles per hour in bath the north and sauth dire�tiQns.
A�den Hilis' pa�e�ent management sys�em utilizes a Pa�ernen�i CanditiQn Index 4PCI} rating of
0 to 10[7 where street ratin�s are classified i� three caie�ories: "�dequaie" �bb-1�(i), "mar,�inal"
{31-65}, and "prQblem" (Q-3fl). Ratfngs are based on obs�rr�va�ic�ns af each af the s[reet's
pa�ement surface. Generally, the three categ�ries cv�respand to a le�el of xnast �ast eifecti�e
impro�erne�t as f�Iiows: �C3-30) pavemeni r�c�nstruction, (31-GS} bituminc�us o�erlay ar re�Iaim,
�.nd �66-1�(3} sealcoat andlor crack sealing. This ratira� system assists an priQritizing roac�wa.y
im�ravements an�i prQje�t�n� cnsts far use in the Ci�y's pa�emeni tna�agement and capita.l
impr+��ement plans.
C11d Snelling Avenue has substantially deteriarate�i and shows signs of significant wear and
distress such as trans�erse cracking, alli�atar cr�ck�ng, and po�:haies. Accarding to ihe City's
pa�ement managem�nt systena, in ��fl8 this roadway was �i�en a PCI rating of 31. Signif�cant
skin patching has been completed along this se�ment o�er the last se�eral years rais�n� the rating
from its 2(�t]$ se�re. Althoragh gi�en the roadway's Iack of structure, a realisiie current PCI
wauld b� k�etween 30 and 40, placing the road in the bitumi raous t�verlay ar recla��re categc�ry
which woul�l be a rehabilitatiQn type of project. The la�t knawn im�rQ�ernent to 41d �nelling
A�ersue exterYded frQm Ccaunty Road E to Arden Place, and accurred in I97fl as part af a�.amsey
�ouiaty project. The Ciiy has �erfarmed main�e�ance on C31� Snelling A�enue includ��n� p�tho[e
fitlin�, ski� patchin�, seal caatin�, and cra�k sealin�. Accordin� to th� A�den Hills Public Works
I3epa�-lment, this segrr�ent of roa�iway was turned-i�ack tn the City in ap�rr�ximat�ely 1995.
Ciiy sta#f v�ras nol ahle to find MinnesQta llcpartment ❑� Tr�.n.nsp�rtatian (MnIDQ`�') rc�ords far
tlae ariginal constr►.�ction or maintenance on Qld Snelling Avenue. Several sQil borin�s were
abtained throu�h ihe praject corridar, both within th� rnadway and on ihe shoz�lder, to ideniify
existing subsoils. Th� sQil barin�s indi�;ate v�..rious thicknesses af bituminous pa�ement ran�;ing
from 3 inches io 14 inches. The a�erage pa�ernent thi�kr�ess i� the traveled lanes is 6 inches.
`l'he sandlgravel a��rega�e base ihicktless ranges from 0 ta 7 inches, dependi�� Qn whether t�e
b�ring was tak�n an the shoulder �r in the dri�e lane. The aver�,�e t.�i+�kness af the ���re�ate
base inplace is 6 inches. Th� fll �ac�eath ihe existing pa�emen� section consists �nostly of sandy
lean clay and clayey sand with gravei. In same barin�s, t�rp��il and c�rganic matcrial was also
nbser�ed. In�ividual s�il �arircg logs ha�e been included in the App�ndix G Qf this repart.
Near the s��i:h e�d Qf ihe proje�t area there is an existin� }�rid�� structure which crasses o�ver the
Lake losephine discharge channel, ultima.tely draining ta Lake �oha.nnna. The br�d�;e struciure was
originally co�structed in 19�b anc� is appraxirnately 36 fee� wic�� with a 2D faat long span. in
accordance witl� NinIQ�T's ret�uirerr�ents, Ra�msey C:+��niy has been gerrorr�ing the necessa�'y
Y�rid�e inspe�tiQns f�ar the �City o� Arden Hills; the rreosl recent ins�ection vvas carnpl�ted in 2011.
The bridge is pc�s�ed with Ivad restrictions b�.sed c�n the eondition of #he siructure. This structure
has b�en posted for vver 30 years
E�ISTING UTILITY CaNDITIQNS
City utilities �t�cated within the project limiis include sanitary sewer, water, and storm sewer. The
e�isting conditi6n� for the utiliiies were obtain�l from City as-buiZl drawings and the impacts to
th� �iilities ar� aniicipated ta be very tx�inimal. PriVate iltl�ltl�5 include gas, electric, cable
televisi€�n, and telephc�ne.
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Sdnitary Sewer SY�tem
T�ere �s a�m�ll atna►�nt flf sanitary ��wer pi�cs and manhales within the prc��ect area that are
autside the raa.d�way area and Io�ated in adjacent tlitches. T���e ps ane san�tary sewer pipe
crass'rng old Snelling Ayenue at Skiles Lane.
Vllater Sys�em
T'here are watermain pipes, �al�es, ��1 hydrants which extend along a majority o� the proje�t,
but are mainly �utside c�f the rvadway area aa�d lo�ated in adjacent ditches. There are watermain.
pipes that crass C31d Snelling A�e�iu� al Arden Place, Glenarden Road, and �ummings Lane.
Accordir�g tc� �ity recc�rds, �here has be�n an� wate�ain break along [31d Snellir�g A�renue
which was re�arded in 2�a6. This waterrr�ain break was not wiihin the roadway area.
Storm Drai���c Svstem
Sir�ce �ld S�elling Arrenue is predaminately a rural raadway, there is �ery little storm serjaer
within ihe prQjeci area. Howe�er, there are two catch �asixzs and a correspanding sewer pipe near
the in�ersectiQn Qf Cour+ty Road E. �ul�erts are lc�cated under ihe adjac��t roaciways and
dri��;ways which �.a�eet to ()ld Snelling A�enue. The majority of runoff alc�n� O�d Snelling
AWenue is directed �a ditches alang the roadway which ultimately cirain to pand� or wetlarnd
areas.
PROP�SED STREET IMPRaVEMENTS
City s��.ff h�.s ex�lored numerous raadway impra�ement alternativ�s far Uld Snellin� A�enue. In
2D 14, the City Cauncil directed staff ta com�lete a S�aping DQcument, idet�tifying �rari�ns
a�terxiatives and associaied casts. FiVe alternatives were an�lyzed, varyin� from co�n�lete
rece�nstruction ta an urb�n se�tion (�dding concref� curb and �utter), ta reel�.irning t�e existin�;
par�ernent and narrowing the rQad.
Based an the diseussions that occurred wiih the C�ty Ct�ur�cal, City Staff recamm�nds a
reha}�iiitatian project, where the p�veme�t is reclaimed, regraded and repa�ed. As pre�ivusly
discussed, �he nartherly ��� i'eet af C)Id Snetlin� AVenue fram Caunty Road E ta Ar�ien Place is
an urb,an sec�ion wit�► co�crete curb and g�tter. The existing curb and gutter s�ctian that currently
ex�st� will be maintain�d, as well as the existi�g lc�i turn lane at Cauniy Road E for northbound
traffic. 1'he remainder of C)ld Snellin� A�venue is prr��c�sed tt� remain � rural section, wiih
shoulders and na cc�ncr�ie curb a�� gutter. The prapc�s�d raadway will match the existing
raadway: one 12-fo�t lane in each direction, with 8��vat wide shfl�al�iers.
This se�tnent set-ves as a colle�tor roadway that is eurrently designated as a Municipal 5tate Aid
(MSA} street. In ord�r tcs meet State Aid standards �nd be eligiY�le for �tate Aid funding, Clld
Snellir��, A�ent�e must be rehabilitated tra a?-�on roadway desi�n, The existin�; 24 foot wide
hiiurninous raad�cnray an�I S fa�t vvide shoulders will be rec�aimed for reuse as tlie a�gregate base.
The recc�rnmended pa�ement design incle�des 6 inches of biturtgino�s pa�vement and i 2 inches of
c�rnpacted, a�eclaimed material, The fin�shed roadway surfa�e will be raised raughly 6 inches as a
result af �e reclamatiean and repavan�;. Additional sut��rade carrection wil� be r�aadc if poor
sub�rade canditions are encountered in the field during c�nstraction.
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P"R�P+DSED UTILITY IMPR(}VEIVIE�[TS
Accordi�g i:a the Public Warks I]epartment sta�F, the watermain and sanitary sewer writhin the
praject area are in suf�cient operatin� canditi�n and are not recamnr�er�ded for r�eplacement at
ihis time. Howe�er, mina�r �mpro�ements �r� rec�xnrrtended tc� the �torn� sevv�r systern. The
existing cat�h basins near the ante�section of Cauniy Rvad E�re deteriarated a.r�d nee�i
r�placerment. The pipe connecting these two �atch �asins will also be repla�ed. Any cul�erts
crossing the roadw�.y i:hat are in need of rep�lacement will be replaced ar�ce the pa�ement has
been remQ�ed.
PRUJECT C[IQRDINATI�N
In conjunctic�� wi�:h the improVements to the ra�dway, the City should aisv c.onsider
imp�-c��ements ta the existing brgdg� stru�ture ans� a b�tu�nina�zs pathway alang the cc�rridor.
Ca�rresponding c�st estirnates are pro�ided �ar the�e project atterna�iv�s. Cc�nstruction of the
bridge structure will req�zire elosure of the road ta thpu traffic. Ig� Qrder to minirnize impacts to
the neighborh��rd, construction of both the bridge and the roa�iway impro�emenis shauld be
co��urrent. Trail construction wiil nat necessitate elosure of the roadway and is there%re nat as
critical tc� ha�e cor�current canstr�ction shauld #he City Cauncil wish ta proceed wiih trail
irnpra�emenis.
Brid e Str�zcture:
Kimley�Ho� and Associates, Inc, inspeeted the �radge in 201 Q. Their repar� indicated the
cxistir��; bridge is not in a eonditian to �eceiVe mainier��r�ce that will exter�d #he br�d�e's usefial
life. I�.imiey-H�rn has estimated ihat to ren�ove and replace the bridge would cost approxi�rately
$491,(}OQ�. `�his eost estimaie assumes that th� brid�e wili �e wic�e enough ta ��cammodate an
impro�emer�t �Q �ld Snelling Aven�ae th�.t meets Sta�te Aid siaradards, as well as accammodate
the installaiic�n o� an 8 fat�t w�de bituminous trail. The estimaied cost af the �ridge repiacerrrent
could be reduced aecordingiy if State Aid standards and t'he �iturninous trail are arnitted.
In Decernber ZO11, the City Cour�cil authQrized staff ta contract with �ir�ley-H�r�a ta complete
fina! design of a new bridge struc�ure; in�ludir+g abta.inin� Mn1I][]T appra�ral and preparian� ail
necessa.ry permit ap�licaiians. It is anticipated that Kimley-Horn wili haVe the final plans
e�rnpleied the latter part of 2012.
Situminous Trail:
The Ciiy of Arden HyYls' Parks, Traiis, �.nd �pen Space Plan identifies the �ld Snelling 1 dld
I-Iighway 1Q cc�rridor, from I�amsey Cc�unty �to�d 9b to Trun�c Iia�hway 51 as a major noaa-#hh-
sr�uth trail �nnection. In De�ernber 2�f�$, the City hired B�itvn &�Vlenk, In�. io prepare a
preliminary en�ineeri�� repart to �leiermir�e the feasibility c�F canstructing a trail alon�, this
cc�rridor. A�artian af I3olton & Menk's rep�rt is inclu�led in ihe Appendix for reference.
In December �DO$, Bvltan & PVIen% estimated that a trail installed a14n� Old Snelling Aven�e,
fram Ca�nty Raad E ta Trunk Hi��way S 1, would cost appraxi�nately $30�,(�00 on tt�e west side
af the rvadway and appraximately $�41,0�(� on �l�e east �it�� �f the resadway. �or th� pwpases af
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th�s feas�bili�y study, City s#aff is recammending tt�►►at the traii be installed on the west side of t�ld
Snelling A��nue. City staffis als� proposin� �o inflate I3olt�an & Menk's 2(3i18 cost esiirnate ta
$3SC�,(i4fl to represent 24312 �onstruction doilars.
In lieu of cQnstr�acting an 8 foot wide trail alon� with �e Qid Sneiling �-Lvenue project, the City
eauld a�Iaw pedestrians ta use one of t�ae existing raadway shaulders as a trai�. �or safety
purpase�, it is not recammended thai a shoulder be signed and �a.rked as a tr�il, bu1: � shauider is
�n opti�ara fo� pedestrian tr�.ffic i� th� �ity is unsure about constructing an S foot wide trail along
wit� the Old Snelling Aven�xe project.
Cou�tv �.�ad E Brid�e Regl�cemeni;
It is a.r�ticip�.ted that 1�� Cc�unty Raaci � bridge crassing over Trun�C I�I�ghw�.y 51 wil� �e
rec�nstri.��ted ir� 2415 and that traffic will not l�e able to cross over ar �.ccess TH 51 in this a�`�a
durin� the canstructian duraf.ian. This Glosure by MnDOT may direct additianal traffic anta Old
Snelling A�enue while the County Raad E brid�;e is reconstru�ted. Since the �ld Snelling
Av�nue �iridge struciure �urrently has a posted weight limit, th� City Cau�c�l rnay want to
schedule im�ro�eanents to the bridge structure pri�r t� ihe County Rt�ad E}�ridge reconstruciion.
R�sey Cauniy will be rec�nstruc;ting U� 1 il and Hwy 9� in 2413, and it is nQt recoBnrrsended
th�t these project� occeir sizrh.ultaneously due ta the clasure af Hwy 96 and rerouting af traffic that
is expected �urgng constructir��..
REQ�.FI�tED PERMITS
The anticipat�d permits required far the pr��os�d praject ar� as fallaws:
Minncsc�ia Yffllutian Cantr�l Age�ey (MPCA) ...............................NPI�ES Erosian &�tarmwater
R�.msey County ................................................................................................ Right-af way Permit
Rice Creek Watershed Dis#xict (RCWI]) ....................................................................... Stormwater
Since the propased imprc��ements cflnsisi af bituminvus reclamationlrehahilit�.tian project,
�ersus a complet� street reec�nstruction, the City should not ha�ve i:4 construc[ storrn �water qualiiy
and �oliune �ontrr�l facilities ta satisfy the Rice Creek Watershed District's �CWD} rules. The
ir�prouemen�s t�at are prc�p�sed w��l not result in an ir�crease in ia�riper�i+ous swrface; hower°er,
si;aff will worl� wiih RCWD tc� ensure that the prop�sed i�prt��emen�s i'all within their rule�.
lluring final d�sign for the praject, City staff will coordinate with the F.ice Creek Waiershed
District to ensure any nece��ary pez-�nit requirernea�ts are rnet.
NECESSA�Y ANDr C(l�T EFFECTIVI�ESS
This projeef is necessary, �ost-effecti�e, �n�i feasib�e fro�n an engineerin� sta�dpoint. Ii is
rccQmmcnded that the r�aadw�y impro�ements b� canstructed at the same tirne as reconstruction
of the karid�e structure to mini�nize traf�"ic impacts.
:�
ESTIMATED C(�►STS AI'�iI) I'RQPQS�I3 FUNDING
I'raposed praject costs �`Qr �he impraVerne�t prt�j��t, including hituminous sire��s, storrn sewer,
and restoraiion, are iter�ized in the table� located in Append�x B ar�d ��limargzed bela�w. The
cast �stimate is based or� recent constru�tion praje�ts of similar character and assumes ihat �he
prop�+sed improVements wQuld begin in 2f112. Actual costs will �e determined th�cau�h
competiti�e t�ids fi�llowin�; final design for the project. Thereiare, the actual costs will lae
dependent on the market canditions that cxist at the time of t�te bidding.
Es#im�ted PrQseci Casts
Street Im�ro��ments
Constr�c�ian Cost $ 693,2��
Contingen�y � C33r�erF�ead Casts [37°/a) $ 25b,500
TQtal Estimaied C�st $ 949,7(l0
S#orm W�tcr Impra�ements
Constructi❑n Cas� $ 31,200
Contin�ency � O�erhead Casts �3fl%3 $ 9,4[]Q
Tata1 Estimated C.�`osi `� 40,600
TotalStreet Im rr���e�nents �Cost $ 949,7{i0
Total Utrii Irn raverrient� Casf $ 4C3,GOU
�3rid e Re laccment Cast $ 49�,�Uil
To€al Pr�r'ect Cost $ 1,4$1,30fl
The prapnsed prvjeci is eligible for assessments accarding to the City of Arder� Hills Assessment
Policy, Per City Poliey, a portian c�f the street impravem��ts wi�� be assessed ta the benefitiing
properties.
The City's Assessment Palicy states t�at estimaied pr�ject costs should include 37% for
o�aerhead eQsts and coa�tin�;encies. Portions af th�e project inv�I�ing wark nat to be assessed
include a 1(�%, cantingen�y ar�d 2Q°/a fc�r overhead cost�. C3�er�ead easts incl�nde lcgai,
engineerira�, administrati�e, and fiscal costs.
Along vvith assessments, street c�sis will he finaneed thrQugh the PIR fund, the General Fund,
and may alsa be el2gible �or 'State Aid fund�ng. Utiliiy impraVemen�s vvill be funded from the
appropriate enterprise fund�, arzd are noi assessab�e. Sridge cost� would nai be assessed.
The �roject design of [3Zd Snelling t�r�en�e is based �n State Aid recQnditior��ng standards, the
�roject is �ligible to be fuzad�d with the Caty's State �Lid funds. The City's Sta�e Aid balar�ce as
af J�e�ary, 20 i 2, $1,174,t383.58, This bal�nee �ncludes ihe 2q 12 aIiacation.
The Ciiy rnay be able ta �°�ceive funding from the S�a#.e Qf Minnesata's Bridge Bond Gra�t for an
impro�ement to the existing bridge. `Fhe Bridge Bond Grant is pro�i�led by the State to assist
local units of �a�ernment with funding for lacal bridge irnpro�ements. AccQrding to Kiml�y-
�.�
Narn and Asst�ciate�, ��� C7�d �nelling Avenue bridge r�.ay be eligible for fi.tnding in the nexi
c�uple c�f year�. A� this time, t�e ti�neiine far suhrnitting a grant ap�licatian is unk��own a�d the
a�r��lability of �r�.nt funds depends an the �umber of applications recei�ed by the Stat�.
P��LIMINARY ASSES�MENTS
Assessrr�ent Pc�licv
Assessrr�,ents will t�e lewied to the benefiitin� pro�erties as autiined in Mit7t�esata State Siatute
Chapter 429. The City's Assessment Folicy is ta assess 5�% of the oVerall street impr��ements
costs in.cludi�� cantin�encies ar�d ���rhead to the benef tting �roperties. The as�ess�d amaunt is
leWied c�n a unit basis. The Pa�icy alsa includes a prQvisaon ihat statcs that the City Cc�uncil may
deviate Prorn any por[ion of the As�essmeni Palicy as deemed a�pr��a�-iate.
Assessak�lc I'roperti�s,
`I'here are twa c�if'ferent iy�es af proper�ies �hat abut tY�e prc�poscd impro�ements; single-family
prQperties (R-1 zonin�) and t�-exernpi +[Ciiy-owr�ed� properties. There are no cvmmexcial
prvperties that a}aut the praposed impr��ements. The follawin� c�iscuss�es the prapased nurnber
of a.ssessabte unifs f�ar eaeh type af prc�perty fQlic�wed �ay �hc pr�liminary assessments.
Sin�1e-I'amily Residential Properties
"!`he Yolicy states that "a11 resideniially zaned pro�erties with frantage abutiizig a street thai is
averl�id with bit�min�us shall be assessed on a per ur�it basis at the resideniial equi�alent
assessment rate." A lt�t �nit is de�'in+cd in the Assess�nent Policy as a platted sin�le-iarnily
residential lot or equi�al�nt, which cannot be further subd`€�ided for R-1 and R-2 residential
use accar�i�ng to the eurrent City Cade. �l. praperty that has dauble fr�ntage or i5 a corner lots
is assessed one unat based a� the street, used �ar the rnaiiin� address; this has been factored
into �he prelimin�y assessrnent rall.
All of ihe proper[ie� iha� ha�� a m�.iling address on Snelling A�enue are sin�le-family
resideniia.l properties and wili be considere� as a Resident�al EquiValent Unit (R.EU}. There
are severa.� parcels an eorncrs or that front two str�ets. A11 of tl�ese parceIs address +�ff �f t,he
s[reet �ther #han Sneliing, and haVc bcen or will b� assessed at the tirne those streeis are
im�ro�ed.
According tca the Ciiy's Cvde, the mir�imum lot standard includes 9S feet af front #aatage
{1�35 feet for �arner I�rts}, a�ot depth a�' 130 feet, and a minirn�n lc�t size af 14,(}�0 square
feei. Gity staff ana�yz�d the la.rger �ar�els adjacent to the p�ayect, While there a.re a number
af iQts dn Sne�ling Avenue that are lacge enQugh to subdivide by s�uare fooi:a.ge, they do n�t
meet the frontage or dep�th requirern�nts, or they ar� ccavered by a wetland, whi�� is not
cc+nsidered buildable area.
There are 25 residene�s alang th�e p�c�ject �a� wvuld recei�ae a direct ben�fit fram ila.e
impra�ernent� and wauld }�e eli�ible for assessrr�ents in accardance tivith th� City's
Assessment Pc�licy.
7
T�-exempt P'roperties
The assessxnent policy states that iax-�xerr�pi prQperties �e �a b� assessed based on I i]Q% af
the bii�uninous averlay, plus asscreiaied o�erhead cc�sts. The tax-exempt �q�ivalent
assessment rat� shall be set by t�e City Caw7cil. Fr�r the purpases e�f deierminin� this rate,
sta.ff has con�er�ed Tax-exempt Equi�a�ent Units (TEU} to Residential E�ui�alent Units
(REU} as deseribed below.
Qne p�rcel in the prs��ect, 3S8$ Snelling A�enue, is City-ow�aed. For discusszon purposes,
City staff is pro�osing tha� this ta�c-exempt property is includ�d in the Prelirninary
Asses�tncnt RQII with one (1} F.Ells. Howe�er, in past practice, the �ity Cauncil has �ated tca
n�t a�sess City-aw�aed parcels.
Re�er to the Appendix for the 1lssessment Figure and the Preliminary Assessment Rc�ll.
Propc�sed De�riatic�ns and Assessm�r�t Rates
The City Council can ehoose ta base �he assessrnent on actual cantract prices or on the e�timated
pr�ccs in this RepQrt. Esfianated constr�ction �asts are estimaies only, alfl �af the fac�ors th�.t affect
cc�nstruction priees cannot b� pred'actcd. If the assessments ar� based an estimated constructior�
easts, there is a poss�b�l�ty of o�er-assessin� resadcnts if the bid prices c�me in lower ihan
anticipated. If hids cr�rr�e in higher than antiei�ated, the City will end up payin� for �. lar�er
portir�n Qf the praject than �stirnated. Therefore, it is r�camrr�ended that the assessmer�t rates be
se� hased on actual competitiVe 6id pr�ces with reasc�naiale ce��tingencies. T�e praposed project
sc�edule will atlow fvr the assessrnent hearing to take pla�e ���ior ta canstructivn af bi� prices are
used.
A�aplying the Palicy as written, patential assessments for a reclamation praject could he
apprfl�irnately, $T 7,75� per I�EU. With the law number �f assessahle units alc�ng the roadway,
ihe City may �ansider modificatipn ta t�e �aalicy to determir�e a fair and equitabl� methcad for
asse�sing tkae project. In recent years, �he Gity has assessed single-family residential properties
approxirriately $3,5Q0 for bituminous reclatnation praj�ets. The ra�e cauld be adluste€� far
infla�ian based on �h� Cor�siru�tian Cast Ind�x (CCI). This rate is tracked by Engineering News
Record and is �urrently 2.5%. I��sed on an assessment rate af $3,500 per RCLT, f.he City cauld
anticipate recei�in� approximately $87,5�� fram assessments.
The fallowing tab�e shows praject eosts broken dawn hy patential funding sources
�undin Saurc�e Arnaunt
Munici al State Aid � 1,195,20(}
S ecial Ass�ssmea�ts $ $7,5(��
Sur�ace Wa�er Mar�a e�nent $ 4Q,5U9�
Brid e Bond kund $ 158,0[l0
Pro'ect Tot�l $ 1,�81,34Q
g
YR�JECT SCHE�ULE
The fallc�wing is an appr�xirnate timeline that can he anticipated fQr the itn�rovement prQject.
Milestor�e� fallowed �y a"*" indicate that a City �ouncil appraUed resolu�i�n is r�quired far
these actiorzs. �btainin� and pr�gram�r►ing fun�lin� for the bridge replac��ent wi11 be an
imp6rt�nt milestane that will �elp hetter define specifi�s r�f this sched�le.
City Ca�t�cil Orders Feasibility Re�4rl* ..........................................................................Nor�emher
1Viei�hborhoad M�;�ting .....................................................................................................I�Io�ember
City Council I�ecei�es Feasibility Repor[
aind Qrders the Fublie ImproVemer�t Hearin��` ..........................:......................................December
Cc�r�duet �'nblic Improvernent I-�caring
and Order Plans �d Specifications* .................................................................................... �a�uary
Neighbarhood Open House tQ re�iew
Pians and Specifcatir�ns .........................................................................................TanuarylFeiaa�uary
City Co�ncii �Lp�rav�s the Plans and
Specifications an� �rders Ad far Bids�` ...............,............................................,................ February
An�ic�pateci �3id apening ........................................,...,...................,.............,....,.................... M�rch
City C�uncil Accepts Bids �nd �rciers
t�i� Assessment Hearir�g* .......................................................................................................... Apr�l
Candu�t Assessm�nt ��earin� and Ativara
theCanstructaon �aniract* ...............................................................................�.....,................,. Ma.y
Be�i n C�nstru��tit�� .................................................................................................... . ... . ........... J�ne
Corn�rlete Canstructi�n ...............................,........................................................................,4ctaber
I�J
Appeadix A: Project Laca�ion Map
+Dld Snelling Averru�
Impravemen� Prvjec�
�
-�E� HIi.I,S
uxa»���., ,�M�.�«.a�,��,.«
/�% Prc�ject �ocation
Q
�
� •..
.e,�a
m.anas�nrvva
Appendix S: ProjeG� Cost Es�mates
OiLi] SNEitIEVG AVEIUUE IMPFiC)VE�VIE�ITS
FEASiEiILI�Y 5TUDY
ENGINEER'S ESTIMATE QF CUST
City af Arden Hills, MN
Sta#e Aid 5tandard
Rwral Reclaim
Na. Item Qescriptian lJnit lJn�t Price qty '�otaC Cast
Stre�t Impraverrients
1 Mobilization {59� Maximum} L5 $ 3D,040.40 1 $ 3D,�60A4
2 Clearing & Ciru�bing RC $ S,OflU.O� 3 $ 13,842.98
3 €ie�na�e Con�rete Curb & Gu#ter {1ncl. Sawcut) �F $ 4.00 195 $ 7$O.O�I
� R�rr,oV� ��t r���W�way �aWar�e�t (��c�. sawcutl sr $ n.oa zztr S �4o.aa
5 Rerttor�e Canc Dr�veway Pa�ement (lncl. Sawc�at} 5Y $ 10.fl0 35 $ 350.OD
� Carr��aan Exca�ativn (R) CY $ 9.5� 5,957 $ 55,586.5�
7 Subgrade Excavat'sor�(EWj Ci' $ 9.Sfl 1,492 $ 14,I74.Q0
8 Subgrade PreparaEipn STA $ 1SO.tlt? 43 $ fi,45flAD
9 Bituminpus Pa�ert�ent Reciamativn {1�" Qepth) SY $ 2.D0 �7,9�fl $ 35,8�0.4a
10 Type 5P 12.5 EVon-Wearing Gourse fVlix {2,Bj TO�[ $ 6�.5fl 4,332 $ 27(3,750.Qfl
11 Type 5P 12.5 Wearing Csa�rse Mix {2,8} TC31�[ $ 55.Oi} 2,7.67 $ 140,855.00
12 Bituminous Material for Tack Coat GAL $ 3.Dfl 1,79D $ 5,37�.00
13 Bituminvus Cantrof lvint [Saw & 5eat) Lf $ 2.5fl 5,9�5 $ 14,762.5Q
14 Type LV 4 Wearing Course M�x (3" Ctri�eway} SY $ Z5.06 13Q $ 2,750.0�
15 Adjust �ate Vai�e EA $ 25(3.40 3 $ 750.�0
16 6°' Concrete dri�eway Pa�ement SY $ 45.Of7 35 $ 1,575.Oi7
27 Con�rete Curb & Gutter, Type 8618 LF $ 15.OD 195 $ �,925.Q4
18 6eofexti�e Fahr'ac, Type V SY $ 2.a4 7,7,5�3i1 ,$ 35,80D.Qd
19 Traffac £ontraf L5 $ T�,Q4�D.00 , 1 $ 1Q,Q4�.Da
2D Si1t fence LF $ 2.50 $,5[i0 $ 21,25q.00
21 fnlet Ftokeeti�n EA $ 15Q.Op 6 $ 9p0.flp
22 Seeding AC $ 4.Q(10.t�0 2 $ B4OdJ.[}0
23 Eras€on Gontrol Blanket, Categvry 4 5Y $ �.OD 2,97$ $ 8,934.{7Fi
2R Ep�xy Pa�ement Marking: 4" S�lid Yellow LF $ 0.5Q &,75a $ 4,375.00
�5 �pvxy PaWement iViarkirrg: 4" 5ofid White LF $ �.50 8,75C3 � 4,375.OE}
26 E�axy Pavera�ent Marking: 12" Splad Yellow LE $ 3.OQ 75 $ 225.40
37 Epoxy PaverxrenL Marking: 12" SQlid Whdte lF $ 3.00 25 $ 75.4Ci
28 2.�' x 6' Crosswa�k: Whute Epoxy SF $ 5.D6 135 $ 575.�Q
29 Pauement Niessage �LT Arrawj White Epoxy EA $ 150.Oa 2 $ 3pp.Q6
5treat [mprouements S�rhtotal $ fig3,xflp
37% Contingen�y & fl�erheatE $ 256,50�
Street Improuements Tntal $ 949,7DD
Pa�e 1 of 2
��[3 5NEL�ING A�VE�I#UE IMPROVEMENTS
EEASIBI!!TY STUDY
ENGINEER'S ESTIMATE []F G�ST
�ty of A�der� Hi1Cs, MN
Rural Reciaian
Na item Deseript3art Unii Unit Priee £�ty 7atal Cost
Stvrrra [7ra`rna�e Imprgvements
1 Remo�e Catch Basin EA $ 150.aQ 2 $ 3fl0.00
2 Remove Pipe Cul�ert LF $ S.fl� 4(3 $ 200,00
3 15" RC Pipe Sewer, Cfass V LF $ 25.flC1 4il $ 1,QOO.DD
4 Rar�dom REprap, Class fli w� Fflter CY $ 75.Da 1Q $ 75Q.00
5 Cans��-�sct Cateh 6asin {w� CastirrgJ �A $ Z,000.{l0 2 $ 4,flOQA4
6 Type 5 Hardwoad Mulch CY $ 4D.4{� 5 $ 2p0.pp
7 Aggr�gate Bedding CY $ 2Q.04 5D $ 3,0��.(�0
8 6" Perfvrated PE Fipe Drai� LF $ 117,�7p 350 $ 3,5Q0.(i4
9 6'" PVC Pipe Drain Cfean-out EA $ 2QO.C3f} 1 $ 200.pD
1fl Ciearing and gruh6ing AC $ 20,�QO.Qt7 (1.25 $ 5,fl0�.[ia
11 ❑it�h gt�ding LS $ IQ,00c�.00 7. $ 1�,D00:�0
12 Tapsoii CY $ Z3.QD ii5 $ 2,275.0[]
13 Ca4 2 Eros�an Cvntrfll 9Eanket 5Y $ 1.f30 975 $ 97�.f1Q
14 Seed'sng AC $ R��Ofl.UO Q.25 $ 1.�Jff0.4(5
S5 Sat� {IneL Tvpsoil & Fe�t'sl�ze�-) SY $ S.Od 150.0 $ 75CY.QQ
Stnrm Qrair�age Im�rro�ements SUbta#at $ 3i,2�€1
3�95 Gontinges�cy & Owerhead $ 3,4�0
5torm Brainage amproVements Tptal $ 40,600
BitiQCE REPLACEMENT $ 491,OD�
CONSTRUCTION IMPROVEIWIPNTS SUBTOFAL $ 724,400
ilVERHEAD (3795 STREETS, 30% UTILITIESj � fi�5,9pp
PR0IECT T�7AL $ 1,483,3Q0
Page 2 of Z
Appendix �: Ass+�ssm�nt Figure and Preliminary Assessm��nt Rc�11
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dt GUTiER
Appendix �: I�imley-Horn and Assoc�ates, Ync. Bridge Analysis
�1 �Kimley-�ivrn
and Associates, lnc.
T`ech�aica� Me,rrtar�ndum
Date: �efober 15, 2� 10
To: Mr. Matt Wooda�tff,1'.E.
City of Arden I�ills
Frarn: Maht 3e�sen, P.E.
Kiml�y-�om and Associa�.es, Inc.
REt Old Snell�x�g Aven€�e Bri�€ge
Bridge 4627
�
Suite 345N
2550 llnivers[�y Avsnue 1�lesS
5t. Paul, Minnesata
55114
Kimley-Horn and Associates, �tnc. is p�eased tn submit this technical
memorar€dum ta tlae City gf Ardeu Hilis for str�cturai review a�d
recoa�mendations for Bridge 4627 as par� of a prelirninary project report for the
improvements to �ic� Snellin� Avenue.
The City af Arden Hilis is evaluating itr�pro�ements to t�e segment of 41d
5neflling Av+enue fram C�unCy Rvad E ta TH 51. The s��m�r�t is apprc�xirnaiely
4,3[i�i feet long, Pies w�thin � 2ilD-fvat rigtat-of-way and is a Munici�al5tate Aid
Aaac�way �MSAS 111 }. Bz-�dge 4fa27 is lc�cated at t�.e south e�d of the segmen€
neap T�-I 51.
The City retained Kimley-Ham to ass�st i�a a�s e�raluation af the existi�g s�ctixre
(Bridge 4�27), and pravide a recammendatiQn for a�eha6ilitation ar repla�e�nent
of �he structure and an esti�ates of t�ie anticipated co�s�ruction costs. Also
p�ra�ided is a lisi crf the �nticipat.�d pernait,s far the 6ridge repiaeement alte�-nati�e.
The City is eva�uati�g t4�e rvadway and trail compc�nents uf the project.
Co�ditia� nf t�€e Existing Strucfare
Bridge 4627 is a concrete slab bridge spannin�; 20-feei o�er a drainag� ditch and
was eonstructec$ in I 326. The strr:ect�re carries Old Snell�ng A�enue �+ehica�lar
�affic over tk�e Lake Josephirae discha�ge cha�nei that flaws ta Lake �ahanna.
The b�idge prc�vides a roadway width of 33-feet.
Anuual s�.fety inspecticrns of the st�-�acture har�e been pro�ided by Ramsey
County; ttae t�s� i�spe�tivn accurred in June 2��19. We were also abl� to sabtain
and re�iew �he bridge pia�ss �i-�m the original cansiructio�. Kirr�Iey-H�rrri
cti�ducted a site visit fl� Qctober 12, 201� ta a�eview a�ad Verify t�e bridge safeiy
inspection infvrmatio�.
■
7EL 851 545 4937
FPs){ 651 645 5776
lu?r, hlat[ iYoodrt�f: P,E.
Dctaher 15, 201�
Puge 2 of 4
The conditiar� of the existing laridge is �;enerally consister�t with the �arnsey
County insp�ctian repor�s, T�e struct�re is load gosted an+� has anly about 113
the nt�annal cap�city of a typical bridge design laading.
The bridge eo�asists
of a concrete slab
span s�apporF�d by
conerete abutrnents
an spz'ead foatings.
Ne design l�adin�,
is p�owidec� c�n the
plans. Accordina tc�
the bridge inven tc�r}
re�sort, the m�ast
r�cent load ratirr�
fctr the str�ct�re
w�s cond.ucted in
1981 but was not
a61e to be c�l�taine�i
at the time t�iis
t�ema was written.
Kirnrley-Hatzt di[1 l�igurc :�: 13rid�c 4G27
nat perforr� a
struetural asa.alysis or �atin� af the existing bridge.
The co�acrete dec� is c�uere�i with a biti.itruna�s �verlay, whic� prevenfs direct
�isual obse�vation of the top of the slab. The bottom of t�se concrete slab is
�isible from �Selow and is generally in fair cand�iion exceps for a large spall at
znid-span c,n the west side of�e brid��. 'I'he reinforcing hars are expased and
�a�e significani co�rosion. T�ere is also sjralli�g around the deck dr�ins. Based
ugan �eld r�eas�rerne�ts cor�pared ta the plans, ther� anay be up to $-ir�ehes af
bituminous aver�ay on the str�xeture.
The abu#�nents az'e casi-in-place and supparted }ay spread footings. The
ab�tments are in fair conditian, with rr�i�4r surface spalling o� cracking. The
wingwalls extend at a 45-degree ar►gIe frcaFn the front face of ihe ab�tmexats and
on the s�a�'ed spread faot�g that extends ta the ends af these wa11s. The
wi�gwalls a�sv have minar spallitag an�i ctegra�iat�on.
E�aluation of the Exiating Structurc
The existing bridge i��s 84 years Qf service and is showing its a�e. While Iea*ving
t�e bridge does provide a less expensiVe praject �.nd wouPd nQt require chan�es ta
t�ee �ood insurance �naps, we cante�d the disad�antages of leaving t�e bridge in
place autweigh these consideraCior�s.
The b�idg� is load posted, �eaning that it does not have the capaeity to supg�ort
norm�l raadway loacis. �Qr the struct�sre to remain in service, it wiil require
continued load posting sia�c� strengthening of t�e structure is nr�t feasible. The
hlr. h9at! Wraadru,�; I'.E.
C3ctober I5, 20dQ
Page 3 of 4
stizaekure wilt cantinue to deteriarate, with the core of the deferioraiidn oecurr4ng
at the deck spall under tk�e southboa�ad lanes. �ased upon nomeal deterivra�ion
�e�els, we antieipate ��is structure will be eansidered Structurally lieficient in the
next few years.
The existang i�ri�ge aiso do�s not pro�ide th� necessary width to allaw two-way
�ehicular traff c and the des�red shared-use ��i�ycle ��d gedestrian} path alang
QId Snelling A�enue, Either a separaie structure w€ruld be required for the pat.�,
or an unsafe condition constricting the �ehicies and pedesirians onta the existiazg
width that wc�ul� ztot rneet Mnll�'ClT State A�d standards.
S#�uciure l�ecamr�endation
Bas� upan t�e condition of the exis�i�g bridge, the narrow dec�c width, and tl�e
desire tt� add a trail along this aTignmen�, we recamme�� �,t�se City ca�sider
replacing this bridge as part af �e C)ld Snelling A�enue irnprc�Vements. A
repiacement stn�cture wQuld ac�ommQdate the laading capacity of a. two-lane
roadrvay and a rr�ulti-use trail and wauld be canstn.ictec� ta MnfUDT State Aid
Standards. `T�te structure ty�e vvill l�kely l�e a eulvert. This type of s�.ruct�re
w[�rald a�law the rcr2tdrxay and tra.i� to sp�� ��er t3�e drai�age channel and a
cuivert is i}se masi cost effeetive str�etua-e type. Culve�ts are alsa � very lnw
maintenance siracture wher� cor�structed corr�etly.
In review af tbe existing hydra�lics, we ass�me t�ai we will n.eed ta gro�vid� a
similar waterway apeniug as the existing b�idge sa tlaa� base fland elevatior�s are
not signi�cantiy af�ecte�. Based u�acan ihe Fload �nsuranee StFic�y, the Jr�sephine
Lake Discharge Channel has a 1 aa-year ( l% ann�al ch�n�e) flaod ele�atian �f
880.� irrunediately upsiream of the O�d Snellin� �r��ige, and 879.9 immediately
dawnstream. The low chard on the existing b�icige is S$fi.12, approximatety 6-
feei aba�e the flood ele�atian.
Basec� �tpon tize sutvey of the exisiing channel, t�e waterway a�ening is
apprnximate�y 20-feet tan� and 2 feet high. We aa�ti�ipate two 1+Qx4 box culverts
will pra�ide �he req�ired waterway �pe��ag, and allaw fc�r a i-faoi freei��ard ta
the Iow-ci�ord. The }aax �ralVe�s a�-e est�rnated to ha�e a total lers�th af 9�-feet, to
�rro�ide the roadway and trail sectit�� acrQss the channel with ihe a�ticipated
reca�ery ze�nes.
During preliminary and final design af t�e stnact�re, a detail�ec� hydraulic analysis
will r�eed t� be �ernducted. The �ulvert sizin� antncipated �� this repvrt wouid be
fin�lized during �his phase af the project. We har�e canser�ati�vedy assumed ihat
the wa�erway area provided by th,e Gul�ert wcauid need to clasely resemble what
is provided lay the existing bridge. This vvi�i provide a conser�ati�e cost estimate
for t�e structure.
Since the cul�ert cons�nzc#�on would have impacts on the surrounding weflands,
flc�odplain, and floodway, several perrriits would be required. These permits
include:
Mr. Mat! Woodt-rx,(j, F.E'.
pcto6er I5, 24f0
Page 4 of 4
• Anny Corp of EngineerslDeparime�t Qf Natura! Resources 3flint Wetland
Perr�nit
• Fed�ral Ergaerger�cy Management Agency Conditiunal Letter af Map
Revisican (CLOMR} prior to �aridge cansmuct�ian
* Federal Emergency Management Agency Letter of Map Revisioz�
(LOMit� after co�str�ction is complete
• Rice �ree� W�.ters�ed �istrict Pernaits and Variance fnr fill within the
flaQdway
* I'�Iationa�, �a1l�zta�t Discharge Elirrainatinn System (I�1�'L]ES� permit for
ernsion coratrfll which cQuld he included waflz tt�e �aadway work
T�se anticipated casts ft�z- the permits are included it� the eos# estisnate for the new
st�uct►xre. We �ratiei�rate the pern�itii�.g casts of this project w�ll affset by
pro�iding more cost effeetir�e cul�ert structure at this loeatic�n.
Esti��te o�' Probable Ca�structiea� �Ccasts
ICimley-Horn inas prepared an estimated total cost for i�ridge repla�ement. Ali
casts pz'csented assumed 2�1 � canstructian dollars. Construction casis include
the anticipated hridge cc�nstruction c�+st, bui do noi inc[ude raadway, ertssio�a and
seciirrient control, traf�c c�ntro�, vr other nQn-bridgc relatect costs. Permitting
costs incluc�e the prQfessional services ta prepare �he perrnit applications,
including wett�nd delir�eatiQn, �Cyciraulic madeling, and pe�aait applicaiion fee.�.
PrQfessional Serviees include �r�dge fune�i�g a�plication, b�-idge design, bradge
plan a�rd specification �reparatian, and bridge construciion ph�,se services.
T�e following table c�utlines the arftieigate� praject eosts, and detailed cust
infvF-�natio� is attac�ed.
Preiiminary Estixnate of Constructic�n
Permit Prepat"ation and Applications
F'r�fession�I Servz�es
Suhtotal
Coniin enc I S%
TQtal Anticipated Cast
Attaci�ment: Construcfion Cost Estarrx�ate
�316,{1fl�
�6i,000
�66.Ul�0
$�443,0[!d
$48.Ot10
5491,000
Cc: Kristine Giga, P.E. —�ity.of Arden Hi11s
S�:#h Engum, P.�. — KHA
l�imley-Horr�
� � � and Ass4ciat�s, �nc.
I�f�EL1MlNARY BRIDt3E CflST ESTfMA7E
CfTY (�F AR�3EN Hk1�LS
nLD S1�lELL1NG A1AENt�E �M�AS 191} UVER �ISCHARGE CHA�li�EL
�XlSTING BRlQGE NQ. 4�27
PRQFESSi�hIAL SERVICES
BR{DG� 60ND FUNQING APPLICATIDf�
6RI�G� ❑E51Gh! AND CQNSTRUCTIQN SERV{CES
PF2Q�ESSIONAL S�itVICES SUBTOTAL
i �i118f201(1
��,o�a
�s�,aoa
SUBTflTAL w=-•,',•••••,
C�N7INGENCY 15°la $48,f}C1!Q
NEW STRU+GTl1R� ESTIMATED Tt7�TA� $49� r4�f1
Appendix F: Bultan & Menk, �nc� Preliminary Trail Report
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Consult�ng Enc��neers 8� S�urveyr��s
12��4 Nicalfet AWe�ue • $urnsvil�e, IV4%155337
Phon�e [952} 894-t3509 • Fax �952� 89�}-8tJ65
W W W. C70��O�i!—iil�ii�.Ct7[Yi
I3e�ertrber 3, 2(l0$
Ho�,arab�� �v'Mayor an� City �a�c�l
City of Arc�en Hills
� 245 West Highway 96
A�rden Hills, I�vIl� 55112
Re: QId '�ne�lin� Ar��zxue 1 C�Id Hi�hway 10 Trail
�MI i�ra1ect No. T16.14D325
Catr.t�ci] Mernb�rs:
f �'�•.I��
In aecordance u�ifh your request, #t�e fQllowing Prelirrai�ry E�gin�eering Rep�rt has been prepared to
�valuate al�erna�i�� lacations for the piac�meaat vf a trail alc�ng �DId Snel�ing Avenue �d Otd
Highw�y ��3 from Minneso� State Highway 5 l to Ra�nsey +��ur��y Road �f . The �iternati�e� ceansist
of eoz�id.c�rs �'or t�e trail alang the e�st or west s�de of Olc� Snell�z�g Avenue, �n addit�on, thi� r�port
�n�iudes a re�vie�r and �a�ysis c�f a trail erossing �t ihe Canadian Pacif � Rai�rvad br�d�e loca�ior�,
As s part c�f the study for these alternati�es �axious t�pograph�c challenges have heen identified.
'dariaus aptierns far a��ccsrr�u�g these ch�Xlenges ha�e �een �val�ated, an�i opiivns ior cc�nstruct�on
a� outlaned w��Iyin �.ie re�mzt,.
While evalua.ting the grojeet goals and #he existing condi.tivz�s vvitl�in the projecf areas, valua�le �put
was re�eived from the City's �'u�rlic �Narks, Engineerang, an� Parks staff. We wou�d Iike to
acknawTedge #.he coc�p�ratic�n az�d ixc�o�atioa� ree�ive� a�d #hank aII paxties €or �lieir s�apport ir�
helping � better un�.er�tand the �rableans and oc�ncerns within �he project area.
Marcus Thvmas, �'roject Mana�er, and I wiit attend the �7�ec�znber �, 20f�8 Cc�►kncii aa�eeting #c�
present this re�ort a��,c3 respond to anY q�.esiiQz�s or c+�znments that you rnay have.
R�sgec�fir.liy suhmi�et�:
gO�TCJ�i AI�1I) ME�'�, INC.
��j�,.', o�...' L�
Travzs L.1ltrinter, P.E.
PraJect En�ineer
f.�ESlG�I#t�iG fG�R A B�TTER �C�M�3l�R�JW
Baltor► & Menk is an �q�al agpc�rtuniry employ�r.
CE�tTTFICATI()ltiI SHEE�T
� I7.F`.iB�}'y C�i�f� �le`l� ��115 �]�c�Ilr specif cat�vn ox repart wa� p�ep�ed by me �r �xr�der rny direct s�z�ervision,
arzd that T arn a duiy Li�ensed Prafessio�al E�gi�aeer under ilae lavvs ��t1�ze 5ta�e vf 1Vli�esata.
_���`�`�. �. ��'�t�t..
Tra�is L. Winter
Date: l� �� Lic. Na. 45649
TABI.�E flF C�NTENTS
�re��min�ry Engineering Repvr�
ca�a sn������ �V�n�� i a�a x�g�W�y xo z���xz
City o�` Arden Hills, Minnesata
'TITLE SHEET
CERTIFICATIC)N SHEET
TABLE O� C�NTEI�TS
1. iNTRODU�TION ..................................................................
2, SACKGRC3UND ....................................................................
3. L�ESIGN I�FLUENCES ........................................................
3.1 Exisi:�ing Tvpc�graphy .......................................................
3 2 Design St�daxds
PAGE
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...............................1
.., ,.... ....................... 2
............................... 2
. ..............................,,.,...,...,................................................._...,..... 2
3.3 {]ther Co�sideratiQns ...........................................
4. DESIGT�I APPROACH .................................................
5. �P RAIL,RDA�} BRIDGE CROSSING ..--•------•--•.......
6. ESTiMA'�ED C[}STS .................................................
7. CDNCLL�SI(3N� AND �ECC)MPvIET�`T�A,TION ........
APP�NDIX A — F�GIIRES
APPEhiDIX � -- CflST ESTiMATE TABLES
............................................ 3
........................•---------.......... 5
.....................�....,�._.............. 7
............................................ 9
.............................•-...........10
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. � � Preliminary Engineering Repnrt � ;
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'� ' � "� Qld Sne��ing A,�einue ! nld Highway lU Trail ' �
. � . �ity of Arden Hells; Minneso�ta
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I: INTRODUCTID1Mi
This report �xamines t�e feasibility of c�ristructing a�omhineci bicycle and pedes#xian trail atong Old
St�ellirig Averiue f Qld Highway 1[l frorn 1'vlirinesata State HigY�r�vay 5� ta I�amsey County Road 96. See �
�igure l' in Appendix A�or the locatipn of the prciposed traii, '
.
� r�'�'� ,,��� *���a� :�` � The Ciiy af`Arderi HiJls' Parks, Trails, and Open Space Plan identiiies ., �
�yd���'v�n`�� . ..r>.a}�� ��,;._., . . . � . . .
.,
� . .Ts � �� �-tl�.is con•id�or as bein�, a inajar north-south trail connection: Tk�e tr�il�
.., r� � w .:
�;. ,� � will prayide a pedestrian carridor for area residents, Beth�l CJr�i�rersity, ,
,�;`` �' `,� ` azid. area parks. As a pa�t of this re�art twa alte�-nati�ve alignn�ents �"
`';`- "��' :'� ._� ' '� har�e been analyzed ta d�termine a feasible lflcation for a trail. The
�:� ,
`� ` ',, s� two alternatives consist af Iocating fhe trail fln either tl�e west vr east '
�;� �r : `� side o�t}ie rvadway. Boili altern�tives cantain a number of challenges
}��;,� � that will need to be e�aluate� in orcler tc� proVide a safe and cast
'� & �� - � �ffectiv e bif�e and pedestrian �'�cility.
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��,, y� ' Also include� in tk�is repart is a design rec;ammendation to canstruct
�� ����' ������ ;' �� ihe frail under t�e Canadiari PaeifZe railr�ad brid.ge located raortt� �#
+ g.,� � ��.:. : aF
'�� � ;> +County Road E. The cc�nstruction of the trail under the CP Raif
.
� F' ��"¢ � : Bridge has beeiz identifietf by the City as �otentially being the �rs#
� ' ; � � � " �'� ` phase of the trai� prQj ect.
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Z. BAC�GRDUND _ �, _
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TYie City oFArden Hiils is divided'lii�e rnany 1vletropolitan carnmunities 6y numeraus maj�r roadw�ys
and razlroad lines. In order ta baiance traz�spar�atiori rieeds, a network of trails is needed to tae th� City _ �
together. These trails will �ro�ide sa�'e and eFtacti�� rau#ss for pe�estrians and bicyclists. In an effor� #o
plan fvr the aptimum 1o�a�ians far autdoar recreation systerns, a Parks, Trails, and �pen Spaee Plan was
createcl and adapted �iy the' City Council in 2DD�, The int�ntion gf ine pian is to guide the �.eeision-
rriaking re�arcl'zng future trail constn,icti�n ta cr�at� ca�inections to parks and other trail network�. The
�nelling A�venue f O]d Higliw�y ID'cvrridar is centraily located within Arden Hilts, and is icientified it�
the Parks; 'Trails, and Q�en �p�i:e Plan as b�zng a�ital trail Eoc�tion that r�iil provide access �d
ca�ecti�ify. Besides beirig �entxally lacated in the City, a iatuxiber v#'par�s and Bethei �niv�rsity can be .
fa�.inci along the corridor:
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Otd Snelling E1,�enue 101d Highway Ib Trai[ Study, City uFArden F-Iills
BMI Prvject N4. T 1 fi. t��325 Page 3 .
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' . ' 3. DESIGN INFLL'ENCES _ , .
The Gity's �oal r�rith this stuciy is to determine a f'e�si�le alignmeni for a trail th�at will pro�ide a saf� and
cast effective facility for bicyc�� and:pedestrian traffic.
_ 3..I .Existing 7'opr��raphy
= The Snel�in� Avenue 1 O�ld Highway 1C1 cariidor contains a
bituminc�us roadway with grave� shouiders and ditches vn both
sid�s f�r draina�e alflng most' oi its Iength. A�ew portions of'
the roadwa�i l�a�e. concrete aa� bitumi�tous ci�rb and gutter wit�i
storm sewer. The existing right-af wa� ranges from primaril�r
-, lieing �00 feet �vide alang Snelling A,vez�ue svuth of Cc�tulty
Raad E i� �eing pxirnarily 100� feet wide alon� nld Hi�nway 10
� north af Caunty Road E. The area is completely develop�d with
rnostly single family residential horries aric� townhomes located
' on the adj ae�nt �roperties. Thc right-of-way of tnis route also
_ contaTns in�r�y woUc�ec! areas. Otller features flf ihc corridor
> include a brid�e o�er a drainage �vay, wetlai�cis, lakes, a railroad
, bridge, as well as a�rri�ge far In,te�state b94.
� • as
.�. � �G'SdgiZ ,��L�'i2Y�Ca'YL�S'
The prirnary design s#�tdar�Es ap�lical�le to this study include the cuz`�`ent edi#ion of tl�e NIn/D�T
- Bikeway Facility Design M�nual. The mai�ua� pr�vic�es �uidazice on the �ci�tical ciesign and planning
elezr�ents to promate safety, efficienoy, and rnobility far bicycle and pedesfrian traveL
Bath nn-road ftnd t��'f road p�ths were evaluated c�uring ihe analysis of th'is corridor. Typical4y`bz�-
-0� �oad facilities are nat de�ired far ped�strian tra.ffic c3ue ta safety concerns. For this reasan, an off�
ri�ad skzaxed use trail is the preferred facility ta be ursed al�ng Qid Snellzng Avenu� f O1d Highway 1[�.
To serVe botl� �ricy�le and.pcdestrian traff'tc, t�e m�nimuzn �avement width reeammendcd is eight
- �°eet. The Bikeway �Ianuai specifies that a trail needs to also haVe a two foot gravei ar �rass
r�ca�rery a�ca graded at a maximum slQpe of 6H:1�T c�n both sides. Pav�ment altematives such a�
, bituminaus and concrete were consic€ereci �urir�g tliis study; hQwever, the eon�xc#e aption wauld add
�, signifcant cost to't�ie project but wau�d nat 'imprati�e ar ex�liance the project sufficiently ta �arrant
`' �he optian. 5afety railing is recommended aIong area� oftrails wli�ere t:he adjacent recovery area do�s
not fne�t t�e specified requirements. Thc Bi�e�.vay Manual a�s:� stat�s;tlia� segments mdy require a
eanerete barrier ta provicie addi�ivnal protection fraxr� ad,�acent h€gh speed traF�c,:sueh as area�
acl�acent Co LT.S. Hi�huvay 1�D, See Figure 2 ir� Ap�endix A for typical sectians ill�s�ating t�.e
fundamental desi�n standards.
'T�e distance frn�ri the ad�acent r�adway is the prir�►ary facior in deterr,�Fning th� Iocatiaan af �. s�areci
use trail withir� the right-of-way. �t is affected l�ath by th� speed of the adjace�zt roadway and the
C3ld Snelling A�enue I Clfd Highway P0 Trail 5tudy, City �rfArden Hiils
BM[ F'r4jc�i N�. 'C l G.11?ti32�
Page Z
�e vf raadway �urban c�r nkral}. Table ��elow sur�.�mari�es ihe pat� separatian widths fram the
ro�dw�.y xecommended by the Bikew�y Manuai.
T�E+ie 3
Path Sc aratir�n frvm Roa�wa
'T e c�f Ro��wa S ee�3 Li�it ' PH} . Se aration
�{} pP L�85 2� �t {cie�ira�Ie}
10 ft {m�nimum�
R�zral Sectian tnc� ciub) 45 or Greater 35 ft(desirable)
24 ft (tn�nimum}
Freew�.y 50 ft (minirnum}
� 3Q ar Less 5 ff�rninimurn�
3 ft (minimum, afpar�€ir�g �lle�w�d}
35 — 44l 5 ft (artinit�n.urn}
Urbari S�ctic�n {wit� c�rb)
45 c�r Cfreater 1 U ft(c�esicai�ie)
5 f� (r�inimum)
Fzeeway 50 �t {minimum}
'� Ta�le inforrn�tian prvvided by the Mr�/DC1T B�keway Facitity Design Manual
(3ther design consider�tic�ns such �s exact hvrizc�nt� and ve�zcal a.�ignm�.ents, geometri� design
rec}u�rements, and horizon€al clearan�es ar� nc�t al�le to be �eterrnined �vithout co,�p�eting �
tc�pograp�ic iield survey. These det�its will need to �e e�aluat�d and iz�el�zde� in ttze f�a� design
phas� afthe pro�ect.
The tir►aing of the lraii constructi�n will �e he�t accvmplis�ed w�en the adjac�nit roadway is
recansta-�,iet�d. This a�plies tc� �11 segments and in particular the seg�ent af trail from �tate Hi�hw�y
51 to Cc�unty Road E since the ro�way may be reE��i�t as an urb�n s�Gtivn instead of a rural sectivaa
anti tfie #�ail design can be adjusted ta t�atch the propo�ed roadway.
3.3 C�thc�r �arrsidercrt���s
Stor��. water anana�ernent infl�ences were alsQ cc�nsi�ered during the trail study far this carrido�. A
meetin�; was heici with the Rice Creek iT�'at�rshed District, and it w�s detern��ned ti�at a�il project
where the pa�ved s�.�rface is less than ten �`eet in w�dth a.na � a five fQt�t wide mi�imwn �egeiated
b�ffer strip will r�at i�i�ger any water qualify ar volume co�atrol requirer�e�z�,s. Ir� any area where �iae
pr+�ject does n�i meet thc�se ge�gdelines, that p€�rtion af the traii will be rec}uired tc� meet th� �listrict's
wa�er quali�y and vo�ume requiremen�s. The �it3rcesota PQllution Cvntral Agency's (MPCA) permi�
requirer�sents fgr cr�nstruction projects will generally be met with the same praetices required by the
Rie� Creek Watersh�d District. The �egetated b�aff�r strips that m�et the wa.tershed �districts
requ�rement� wili also t�e�t ti�e MPCA'� requirements for a majr��ity Qf the pra��ct w�ere the
cc�nstru�tion afinfiitrataaz� �asins or wet ponds is not feasibie. The c�sts fvrc�t�str�zctin� ir�fltra�ian
basiras vr wet ponds are not inelraded in this repart since the areas ih,at are feasible tor their
C3id St�elfin� AVet�t�e i Qtd High�,+�.y I{� Tr�i! Study, City of Arden H'slls
BM[ �'ro�}ect i�o. TtG.I{10325
Page 3
�c�nstr�.c�ion will nvt be xdentiigec� �ntii the �eld s�rvey in%rmativ� is a�aila�ie durin� the final
design ph�e a��e project. Any wetland in the praximity oftl�e trail area will need io h� delineated,
az�d any impacts wili nee� to tae mitig�.ted in ac�or�anc� wit� ihe Wetiand Censervat�nn Act. T�e
casrs far wei��c� miiigatian are n�at incl�zded in t�is repar#. At this time, it is nat aniicipatec� tiaat a�y
constructzon wil[ a�e�r c�utsade of the cr�rrezat �treet r�ght-of-way.
C►id Snellittg Ai�+enue f�[3(d Highwsy 1�1 Trail Study, City �f Arden Hilis
BMI 1'rs�,�ec� I�iQ. Tl6.it30325 Fage 4
�t. I7�SI�GN APPR�ACH
Trail construciion al�ng this cflrrid�r witl �e used tp car�ec� local resic�e�ts, Bethel Uni�ers�ty, and area
parks �o ather exisiing and proposed t�aal�, The majoriiy �f trail users are �s�ticipated ta cn�e f�c�zx�.
adja�ent neigh�orhv�ads, mc�st c�f w�.om wiil be caming fram west of Did Sr€eliing Avenue and Dld
Hig�tway ltl. Adjacent fia the trail, ihe west side cvrridvr has 8f pr�p�z�ies whi�e th� easi side has 3(}
prc��er3ties. In evai�a.fing the trail alterr►atives, the costs for t�e different �onfi�urations meeting the
c�esign, criteria were assessed.
Tv the extent practa�al, the recc��me�ded irail c�rnf�guratior� consisis vf a pathway adjacent tn the
ex�sting raa�dway for bot.� the areas #hat are rura� and urbar� wi�ich rr�eet tk�e �xri�imum separat�c�n
requirements ouxlir�ed in Tabke 2. In a.�eas witfi a rura! road section �tad a narravv r�ght-of-way or ar�as
adjacent w��iands �nd Iakes, it is recommer�c�ed that c��crete c�arb and gutter be added to re�iuce the
minimum separation t4 �v� feet. In areas �hat wauld stiii impact weiiands c�r Za�es, it is re�ammended
that th� �raii be ccanstructed immedia�tely £�ehind the cancrete curh a� we�l as utilize r�t�ining vvaIl ar
baardwaik to fu�her redcace w�iland and Iake irr�gaets. It i� anticapaied tt;a� narrr�wing t�e separativn
heiaw the mir�imum requirement in order to re�luce impacts ts� lakes and wetlands wauld �e pe�tted by
siaie ar federai �gencies if funding was �r�p�sed thraugh thase agencies. The a.d�itiQn of concreie curb
and g�tter along sectians tk�at do no� rneet, t�e �n�nirn� separatic�n standarcis �s recc��n�ent�ed to pravide
ac�ditic�na.I sa�ety by be�ter c��iineating the traa� from th� rvadway. Also, it is recflmmended tl�a� the traal
ali�nm�ent be continuous �n either sic�e Qf �e rc,adway r�oi shi�ting frvm side ta side in c�rder tcr reduce
the pvssibiliiy of �ede5trian 1 vel�icle efln�licts. �'ig�es 3 to 14 in A�pendix A iiiustrate the
re���nmend�ti�ns fnr l�caitirrg t�e trail alon� the west and east sides of the raadway. The �igures are
color cad�d to clearly r�pres�ni ��e various f�ail section can'E"iguratian� �hx��.g� the �a�ridor �'or both
atterr�atives. T��a�e 2�elvw provic�es a sumrnary a�th� trail recommene�ati�n� far bcst�t akterna�iv�es.
Table 2
Sum�a af Trai1 Recammendations
Rural Seef�o�i [7rban 5ection MiniFnum
Addit�an�l Curb Safety Retaineng B��rd-
Lvcation With Minimum W�th 1V�ini�nura Separatian
Separa#inn Se�ar�tiv�. Cnns#ructioat Nvt i1+Let ��li�g Wall walk
Vllast Sids 6,�3[i i� 3,97(� i� b,390 fi 4,5i0 �t 3,i20 ft 11,414 fi� 53a ft
Easi Side 8,07i} �t Z,3�#�3 it 4,79fl � S,S50 ft 3,43€� �t 17,13U ft 0 fk
T�e tapagraphy of the cvrridor an both sides of�he ra�dway wil� present � nuYx�ber of challe�ges that will
have sQme i�p�cts t}aat canncst be q�antified c�ntsl a fu�l topographic s�r��y has been completed an€� the
�nal c�esign phase of the prc�ject begins. The�e impacts incluc�e driveways, steep �Ic�pes, gardens,
iandscaping, lakes, and wetEands. D�ing finai r�esigxc it will be necessa�y ta identify these areas and use
retaining ►�+all and b�rardwalk tQ minirr�i�e the impa�ts. A�y boardwalk �sed witl need to be sfi�ctura.�ly
c�es�igned to ae�ammQr�ate a City vehick� fc�r sn�w re;nava�.
O�isi SnslP:ng Avenue l Qld Highway lf� firail 5t�dy, City o€Arden Hills
BPvTf Project Nv. TI6. if]U325 Page 5
It is antic€pai�cf that tt�ere wiil be ss�me p�iv�te ut�lity ca�flicts with t�e l�cati�r� afthe tr�il an eit�er side,
prima.rity th.e conflicts will be with existing power go�es th�t run a�e�ng baik� sides af Cl�d �nel�ing
Avenue a.nd Qic� Highway 14. These e�nf��cts will �eed tfl �e identi��d dwrin�; ��al design and the
aw�.er c�f the �tiYities wi�l b� r�quired to relaca[e ta accommvdate irail co�siruciion.
There are a num�e� Of future trail conne�tic��as that are antieipate�l alan� this c�rridar. Fut�.�re trails
wvuld can�ee� from ih� west sid� of �1c� Snelling A�enue and Old �iighway �0 at S�a�e Hzghway 51,
County Road. �, L�.lce Valentine Road, ParkshQre Lirive, and Coun�y Rva�. 9C, as wet� as the �aa,�"e Ro�x�es
ta Sch�c�i trail Zcrcat�d at Cv�uaty Ro�d �2 tl�at i� scheduled tn be built in �Oi}9. Future trail coa�nect�c�ns
will �e rnade com�ng from �e east ta C)id Snelling Aven�� and (?ld Hi�hway 1C1 at Cc����y Road E and
�ounty Road 96.
There are �. few a�eas alvng th� eorrid+�r �t wnu[d b�st a�eonr�mocia.te pedestrians cra��ing t�e raadway
tc� use tl�e ��iL �ne Qf�Qse Ic�eativns is at ttte inte�sectinn ��Co�nty Rcsact E, a�e� the c�iher zs Ic�cated at
the in�ersection of Bethet i)ri�e.
Dld Sn�[Iing Aver�c�e 1 Ol�! Highway 16 Trai[ �tuciy, Ci�y of Ardcn Hills
�NfI Pro�eci No. Tl6.iU0325 Page �
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A crossing at the location ofthe Canadian Pac�fc railroad bridge �uresents the mast difhoult cYtallenge to
the constructi�iri af a bicycle �zid pedestt•ian faci�ity along . ,, � � �" "�� �`4 " "`�� '"� �:
M� ,*
Qld �nelling El�enue and �ld Hi�hway I0. TY�e bri�ge `�` �: �. ����,r -
_ �_ � - �t a:�. � ,-
uvas ariginalty cvnstructed in i 929, and was updated iii
�951. The CP R�ilroad was not abie ta pro�i�e any as- .
built inforrnation on the bridge; howe�er, they noted tnat it
was af similar ct�nstr�c#ion to the laridge aaer �ld.
Highway 8 in New Srigh�on whe�e as-E�u�it infarmatian
was a�ailable. ' - -
__
'�`he railroad daes not have re�Ia�emen� af this bridge ,� ;;� � �i� � x � E� � F� F�
listed in ara.y ❑t' its long term canstructivn �lans at this �.�� ..,� ,.,._ a' sz.;����,,�:.': .,�... , r_,��,�,
time, but discussions ha�� continued with the railraad to notify tixem that a trail crossin� is pl�nnec� as
vvell as to inform them of th�e planned methad of crvssing, �rom these discussions the raa,lroaei personnel
have indi�ated thai to proc�ed with this crossing, cansfruction plans would need to be presenteci for their
en�ine�ring reView.
As a part af tne evaluativn proc�ss, a number of differ�nt design alternativ�s �vere consi�iered, in�luding
t�za�e�zng and. retaining wa11 cfl�struction, Tunrieliaig would consist of ��ring a casin� thraugh �e soi�
between fl�e bridge piers and the abutment watl and c�nstructing the trail inside th'rs casirrg. in addiii��,
tunneling woutd require the ins�atlec� af a retaining wali alvng thc roadway to pre�ent shiftin� af'the
casin�. Aiter further �.valuation, xt was determined that the tunnelin� alternative would noi be
ecQnomically feasible. "I'he most c�st effecti�e rnethvd to create a trail erassing at the CP railroad bridge
is by c�nstructing a refaining wall which will �uppart the exi��in� bridg� a6utments, and allow �he trail io
pass b�tween i;hs abutments and the �ridge piers.
It is r�carrrmended tha# #he retaining wall �e constructed by �ast-in�p�ace con�crete. The use o#`mpaular
black was also evaluated; hawever, it is not, likely that t�e requirec� gea-grrd reinfvrcer�.ent would he
feasible due t�a the prox�mity of the existing abutzner�t and piiings.
The retaining wall will neec� to be �anstructed ta accomrnodate an eight fac�t wide trail, and inain#ain ten
feet of Vertic�l clearance �etweEn the trail and the bridge. in ihis sit�a#ivn, tha conditions will n,ot a�low
far the addi#ional twQ ��et of clear space an each side of the tra�1. 5Ee Figure 1S in Appendix A�'or
details an the proposed erossin�. Detail drawin�s for the cr�ssing were original�y prepar�d for t�ie Ci�y
}�y URS Corporation. T�e c€esigns by URS were re�iewec� anc� yerified with LHB and ifwas determined
th�t tl�e ceinc�pt w�.s an ef�ecti�e means ofcr�eatin� the crassing. Durzx�g the final design Qfthe crossing,
a n�amber a�'additional design paramet�rs will n�ed ta �e e�a�Iua�ed t� detezxni�.e the exa�t spe�ifica#ir�ns
of the retainin� wall.
Ai #he time when final design proceeds f'nr t�e cros�ing, CP Railrflad wilT need io be confact�d and tice
f nal design approach wi11 need �o be appra�ed and permitted thraugk� thern. Due ic� tne fact tha# tY�e
bridge i� c�f simil�.r cvnsiru�tion to the bridg� o�er ald Highway S in New Brignton a�zd �P Raiiroad
�ld Stzelling A�ei�ue 1 O�d �-Iighway 1� `Trail �tudy, City afr►,rden Hi1Ps
BMI Projeat No. T1b.1f70325 Page 7
,:, :
appra�ed a�rail �ross�ng usi�ag a eetaining wall at that l�scaiian, it is a��icapated t�iat tt�ey woupd �ppro�e a
si�silar d�sig;n �n this bridg� far a cra�sirzg.
The cc�ns�ructinn c�f a crossing w��l�. �ae equ�.11y as feasi�le c�n either side of the brid��, arad the
assoc�a��c� cpsts for such a p�rv,�ect are estimated to be the same.
(]!d Sr��l�irag Avenue 1 D!d (-[igt�way �f3 Traif St�Fdy, City of Arrier� Hi�is
BMI Project No. TI6.iD0325 �ag� $
6. EST�MATEII C�QSTS
Es�mat�d co�structiar� c+�st� �a�e been tabutated based on c�rrent maxket price� and inalude a 15
p�rc�nt contingency faetar. fl�verk�ead ct�sfs, esti�rta�ed at 2(i percent, inci�zcle Iegal, en�ine{ering,
administrati�ve and �'iscal costs. Fina.l eosts will �ae de�erinined &�y using �c�w bid ca�nstrwc#ion casts af the
propased v�rar�C.
Prvpvs�d constru�ti�n costs for the Q�d �neliing Av�nue 1 nld Highway 1 q Tcai� a.��err�atives are
ite�iz�d in the tabies lac��ed in Appendix B and are summarized below. These cost estimates are bas�d
upon publi� �ans�ruction �as� infcrrn�.ation. �ince the consultazzt �as n� �c�ntrvl vver �e cast r��iabor,
ma.teriais, cc�mpetitive bidding pracess, weath�r canditions aiad ather factQr� affecting th.e c4st oi
constru�tion, al! cqst estim�tes are �o�i�ians for general izzfor�natian �f t�te client and na wa�anty crr
guarant�e as to th� acctuac� �� canstructivn c�s� estiz�ates is mad�. It is reco�nm�ntieti that costs fc�r
pr�ject financ�ng st�ouid be baseci upon actual, Cotxipe�iti�e bid �races wsth reasanable +�rantingencies.
EST�MATED PR+DJECT C(3ST�
West Cr�rrid�r �*
Estirr��ted �anstructivn Cost $ �,655,18�.t}0
Conting�ncies (�5%0} $ 2�'�,�77.Oa
Er�gineer�ng and Administraiivn (�fl`�/o} $ 38D,C�I.4D
Tvta1 Estimated �st -- VVest Carridor �$ 2,2�4,148.4+�
East Carr�dor *,
Estitt�ated Cvnst.�uctian �ast $ I,{Cf�,325.{}�
Contingencie� (15°fo} $ 240,�48.75
Engi�eerir�g an�i Actrninistration (2D%o} $ 368,994.?5
Tc��ai �st�mated Casfi — East Carridar $ 2,213,968.59
* Alsr� i��ludes �rid�e crc�ssing �osts
Sridge Crassing and Neeessary Traii Con�tructien *
Es�ima�ed. Cvnstnaci�on Cc�st
Cantinge�,cies ( I S%a)
Engineering and Admir�istration �2(�°/a)
Tc�tal Estirr�ated �vst —'W'est Cc�rrid€�r
* Uoes nr�t inclutie any �aardwalk cs�nstt��uuctivn that rnay b� rcec�ssary
Clld 5nelli�g Avenue 1 f��d Highw�.y 14 Trail Shady, City of Arden Hiiis
8MI Pr�ject No. T16.It3€f325
� �so,�g�.�a
� G�#y�V'�.W�
$ 36,8€l�.f�0
�F ZL�yO����lA
Paga 9
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�., From an engineering standpaint, bo�h �ides are feasible t� construct a trail. There axe a numk�c.r t7{'
influencing �actors that the City wiil warii`tn �ansicter ta d�te�-rnine -'� �
; _ ,
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the b�st location for the rrail; these factr�rs include co�t, conuenience, ��
�� �=
iiser p�eferences, and access. The C'ity shauld seel� input from the �lt ,� ��
,,
pub�ic when making this c�eterminatian. The v��ork,caii be done under �� �s �"� t•;'
,s ,s� s ,t . f�r
ane con�racf, vr be s��it iritv pha.s�s as financing becornes avaiiabl�, h'' �n,��' ��,='"x�}� ��;,. � x,`.;
ry � � ,� ��L � � ,
'� r r.. s�� r �r S:� r� �.� i �:
T'he conclusions ari�: �ecammen�atians outlined in t�iis report a��c: .� E,, �
t : . ;
�onsidered t�;k�e cotnpatible witli applica�ile MnIDO`I' sta�d.ards al „
� this tim�e, `Nith an un�e��ied scYtedule for canstruction o�the trail, it :,�_,,,' s; " �
may be necessary to ree�aliiate the standards for trail coristruction 3� �,= r� F � _
��
sh�uici the UIr�/D�T Bikewa.y Faciiity 1vlanua� be updaf�d befoz�c '` " p
D �' �
�ti��� ! �A x y �. =�t� S . r��.
iinal desigri af the txail is campleted. t11so at the tirne of �nal ,� �'�;;+� �A �,' ;�'� �',,
design, it wiJl be rie�essary to re�vie�� any pvssibl� cYtanges tt� `T � `' ���G,;,��: '�, �
E • , � � �� �.
regulataon� regarding storm watar rnanagemen� and v+aetlan� � �$ �f °� 4` ��` ', x"
canserrvation. Changes to those regulatinns may dictate alteratiaris in ������� '�'�' x� ��s^�" �� `��� .
�;� �� � ,��`�� .?� r}.,a�. 'r, ;,.`y,y ,:N :
the design af the trail- and the scope af wvrk requir�ed to
accoznmodate eanstructinn.
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8MI Project Na. TId.100325 Paga IQ
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SI7E PRI7JEC7
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FiIE 8 4 55 24
SAN�JY '�EAN ClAY tvuith a litfle gra�el, wi€h
lenses af �ine gra[t�ed siity Sdr�d s# B' and 8'
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Sur�ace Elev.: 888.� it_ c�a o m z� z � ? z � o a��
L, 14" of biiuminv�s at t3�e s€�rface Nls� IiGE 72
underlsin hy a m[xtura af siify sancf, cfayey
sand and san�y Esan c3ay, fenass of topsail, $ � �� ��
darlc brown to bEack, irr6th gravel, sorne irarr
caxide staining, mvist to we#, firm ta so�t � 2 �� �� ��
[Fill]
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loose �S P) - 7 7 s5 2a
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surface underlain by 2° a# sand arad graval
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4YRT�R LEVEL C3g.5�RVRTi[3niS S�pf"�C TVsdtCi CI'��I TeS�fllC,� C@��7. START�� 91'1f'{� f1Nf5Fi�fl 91111D
wi � 9� ��� Cromwel! Ave. Q�m�! co. St�k ��7 n�i� €��� 3�7
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�rv��ct No. �s�oa�s�4� ��G (3F E3(3RiNG NQ, B1'I ����t � �� �
CLfENF A�iCHIT��CTlENGINEER
Clt�l O� �I'[iBT1 �'if�ES
SiTE PROdEGT
Ard�n Hi�Is, Minn�sota . 201� Arden HiICs Partement Rehabilitatis�r�
5rtelling Ar►e SAM�1,�S ��srs
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5�1�face Elev.: c� c� � m� s� z � z� � a� ii a
F�L�., 6 1I4" af bit�rminot�s paver�erat AS 1 UG� �4
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o ma�vrin]s leci�no3agy
t�ane � ns���� ca. Elemer�t r��it� Rt� 3fi7
� 6�2 Cromwel! Av�.
� St. Pau#, MN 55114 D�t�LLEi�2 dunleavy A55`TF7RlL�.EFt JR
� 7e�ephone: 65�-�4�-35�1
LQGG�� SY �CSZ APPRC1V�p MAS
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�1TE PRQ.IECT
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FfLL, 6 4f2°' af bitum3rtaus A'S 1 UGE 24
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FILL, �"of sand & gra�e! aggregate
�ase, �ar�C br4wn, f�'ozen, an odor of
petrofeurn detected
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bt`o��t, moisf, an acicrr af petroleum ,� :;�,y
detected - •' ''�
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o �L
J AiOd98 �- maEeclaYs lachnoEogy DR��.L C(?. Eieil'teilf gRIL� FGG 3fi7
�� 6�2 Cromvue�f Ave.
5t. l�aul, M�! �51 �4 DRILLER Dunieavy Ass'� E]RiLLER JR
�r�i��n�l1B: ���-s�6-�60�
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Appendix H. Topographic Sur�v�y
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