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Home My WebLink About8A, TH 10 Local Access Interchange .. _HILES Request for Council Action Prepared By: Kristine Giga Council Meeting Date: June 30, 2008 TH 10 Local Access Interchange Budgeted Amount: N/A Actual Amount: N/A Funding Source: N/A Recommendation: Approve the concept plan for the local access interchange, dated May 29, 2008. This will enable the City to move into the preliminary design phase, which will involve more detailed review, and full evaluation of the associated impacts. It will also provide Ramsey County with guidance in the preliminary design phase of the TH 10 & CR96 intersection project. Chris Chromy, Bolton & Menk, Inc., will be present for the discussion. Supporting Documents: 1. Memorandum dated June 26, 2008 from City Staff. 2. Concept plan for the local access interchange, dated May 29, 2008. 3. Memorandum dated June 24, 2008 from Chris Chromy, Bolton & Menk regarding the one- way frontage road. 4. Memorandum dated June 25, 2008 from Chris Chromy, Bolton & Menk regarding the regarding the bridge width and north frontage road. 5. Traffic numbers for all of the turning movements on the bridge. ~ DEN HILLS MEMORANDUM DATE: June 27, 2008 TO: Mayor and City Council FROM: Kristine Giga, Civil Engineer Deb Bloom, City Engineer Greg Hoag, Public Works Director Ron Moorse, City Administrator SUBJECT: TH 10 Local Access Interchange BACKGROUND/DISCUSSION The proposed local access interchange on Trunk Highway 10 (TH 10) north of County Road 96 (CR 96) will provide the local access elements related to Ramsey~County's proposed grade- separation proj ect at the TH 10 and CR 96 intersection. The design of the local access interchange has undergone numerous reviews, analyses, and revisions to minimize its footprint and its impact on the Arden Manor manufactured home park. The "tight diamond" design that is being used for the west half of the interchange is the narrowest and least intrusive interchange design. The City Council approved a position paper on March 31, 2008 that identified issues and concerns related to the Local Access Interchange Project and the THIO and CR96 Intersection Project. The position paper has guided the review and revision of the concept plan, and will also guide the preliminary design process. While a phasing analysis showed that a west frontage road is needed to accommodate the proj ected traffic, the frontage road has been redesigned to create a combined entrance ramp and one-way frontage road. This has reduced the impact on Arden Manor, including saving four manufactured homes. The approval of the concept plan will enable the City to move into the preliminary design phase of the interchange project, which will involve more detailed review, and full evaluation of the associated impacts. It will also provide guidance to Ramsey County in the preliminary design phase of the THIO & CR96 intersection project. C:\Documents and Settings\ron.moorse\My Documents\General documents\6-30-08 agenda Memo _ LocalAccessInterchange A.doc 6/27/2008 Page 2 RECOMMENDED COUNCIL ACTION The action requested of the Council is to adopt the attached resolution approving the concept plan for the TRIO local access interchange, dated May 29, 2008. ~ ~HILLS CITY OF ARDEN HILLS COUNTY OF RAMSEY STATE OF MINNESOTA RESOLUTION NO. 2008- APPROVING CONCEPT PLAN FOR HIGHWAY 10 LOCAL ACCESS INTERCHANGE BE IT RESOLVED, by the City Council of the City of Arden Hills (the "City"), as follows: WHEREAS, the City is in the process of considering the development of a local access interchange (the "Interchange Project") on Trunk Highway 10 ("TH 10") north of County Road 96 ("CR 96"), in connection with Ramsey County's proposed grade separation project at the intersection ofTH 10 and CR 96; and WHEREAS, by Resolution No. 2008-20 approved March 31, 2008, the City Council approved a position paper that identified various issues and concerns in connection with the Interchange Project and the THIO and CR96 project. The position paper has guided the review and revision of the concept plan, and will also guide the preliminary design process; and WHEREAS, although a phasing analysis showed the need for a west frontage road to accommodate projected traffic, the frontage road has been redesigned to create a combined entrance ramp and one-way frontage road; which has reduced the impact on Arden Manor, including saving four manufactured homes; and WHEREAS, the revised concept plan for the Interchange Project is depicted in the map titled "Highway 10 Grade Separation with SB Exit Ramp and One Way Frontage Road," prepared by Short Elliot Hendrickson, Inc. and dated May 29, 2008 (the "Concept Plan"); and WHEREAS, the Council has determined that the Concept Plan is the appropriate basis for beginning the preliminary design phase of the Interchange Project. NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Arden Hills as follows: 1. The City approves the Concept Plan as the basis for preliminary design work for the Interchange Project. 2. City staff, consultants and the Mayor and City Administrator are authorized and directed to take all actions and execute any documents necessary to carry out the intent of this resolution, including without limitation delivery of a copy of this resolution to Ramsey County and the Minnesota Department of Transportation. Approved by the City Council of the City of Arden Hills this 30th day of June, 2008. Stanley D. Harpstead, Mayor ATTEST: Noah A. Simon, Deputy Clerk 2 +- ::J o >. ..Q EXISTlNG RICHT Of WAY NEW R/W PROPOSED ROADWAY _ PftOPOSEO SHOlA.DER.PAYEO _ RAISED WEDIANS, CUA8S _ 8RlDGE$/AETAINtNG WAllS S PROPOSED stGNAlS _ PftOPOSS) SIDEWAU( . TRAIl _ HOWES 1MPACTED __ 8USINESSES IMPACTED _ IWIJFAC1'URED HOMES nPACTEO FIGURE 1 MAY 29, 2008 HIGHWAY 10 GRADE SEPARATION WITH SB EXIT RAMP AND ONE WAY FRONTAGE ROAD as,- or Arda1 HiDa, UN L.. TC>f'..J ~ E: "'-I a.< , Consulting Engineers & Surveyors 12224 Nicollet Avenue · BurnsvHle, MN 55337-1649 Phone (952) 890-0509. FAX (952) 890-8065 I f'-J - MEMORANDUM Date: June 24~ 2008 To: Kristine Giga, P .E. - Civil Engineer Greg Hoag - Public Works Director City of Arden Hills Christopher S. Chromy, P.E., P.T.O.Er~ Bolton & Menk, Inc. ~ . - Highway 10 Local Access Interchange Evaluation of One- W ay Frontage Road and Associated Traffic Operations BMI Project No. T42.22335 Froln: RE: On behalf of the City of Arden Hills, I have reviewed and summarized the design and traffic analysis cOlnpleted by S.E.H. for the referenced project. At the May 27, 2008 City Council Meeting, information was presented regarding the need for a fi.ontage road along the west side ofTH 10 connecting the Local Access Interchange and CR 96. Analysis associated with phasing the construction of the Local Access Interchange revealed unacceptable traffic delays would occur at the I-35W/CR 96 interchange without construction of the \vest frontage road connection. Changes in travel patterns and levels associated \vith the initial phase of the TCAAP development and grade separation ofTH 10/CR 96 necessitate the need for full access at the ]'H 10 Local Access Interchange and west frontage road connection in 2012 . The two-way frontage road design alternative presented at the May 27, 2008 City Council Meeting was considered unacceptable by the City Council due to its potential increased impact to the Arden Manor neighborhood. After some discussion of other alternatives, Councilnlan Grant suggested a one-way frontage road be evaluated as a means to mininlize impacts to Arden Manor while accommodating the critical peak hour travel demand from southbound TH 10 to eastbound CR 96. Stu<J.y_ Procedures and Findings The traffic analysis \vas completed with the following conditions accounted for: · Transportation Improvements: o Conlpletioll of the 1-694/I-35E "Unweave the Weave" Project, o Full Access at CR H/I-35W, o Rice Creek Parkway connection between CR Hand CR 96, o Grade Separation ofTH ] 0 and CR 96, o Signalization ofCR 96 intersections at Old Hwy 8, I-35W Ranlps, and old Hwy 10. · Traffic Demands in the Year 2012: a Growth in Regional V olunles, proportionate to 2030 Forecasts aNew rrrips generated from initial phase ofTCAAP. MANKATO~ MN · FAIRMONl MN · SLEEPY EYE, MN · BURNSVILLE, MN · CHASKA, MN WJLLMAR, MN · RAMSE'(, MN · AMESz fA www.bolton-menk.com An Equal Opportunity EmfJ/oyer City of Arden Hills June 24, 2008 Page 2 of2 The analysis considered peak hour traffic congestion and delays at 13 intersections affected by the change in travel patterns. With the one-way frontage road alternative and fun build of the Local Access Interchange by 2012, lTIodified travel patterns and levels could be accommodated with acceptable delays at each of the J 3 intersections. The Minnesota Department of Transportation and Ramsey County Public Works have reviewed the one- way frontage road design concept and traffic analysis. While both agencies would prefer a two-way frontage to better accornmodate transportation needs, they are both willing to accept the one-way frontage road in recognition of the local benefits to property owners. Recommendations It is my recommendation that the City of Arden Hills endorse the concept plan for the TH 10 Local Access Interchange with a one-way \vest frontage road to CR 96 the with initial phase qfthe l'CAAP development and grade separation of TH 1 O/CSAH 96. This will enable the City and County to move forward with preliminary design of both projects and more fuHy evaluate the associated impacts. ~ ~ f f r i f ~ ~ r t f ~ r, ~. ::: r [!: ~ f. k, [ : ~: r,i t! ~ I ~ I ;~: L TC)f'J E: f'J I< ~ Consulfin En ineers & Surveyors 12224 Nicollet Avenue · -Burnsville, MN 55337-1649 Phone (952) 890-0509. FAX (952)890-8065 I ~c:- MEMORANDUM Date: June 25, 2008 To: Kristine Giga, P "E. - Civil Engineer Greg Hoag - Public Works Director City of Arden HiHs Christopher S. Chromy, P.E., P.T.O.E~' Bolton & Menk, Inc. -. .. Highway 10 Local Access Interchange Explanation of Interchange Bridge Width BMl Project No. T42,,22335 From: RE: Per your request, J have reviewed the bridge deck width proposed for the current Local Access Interchange concept as well as the design of the frontage road to the Scherer Brothers property. My findings are sumlnarized below: Bridge Deck Width The bridge deck width in the proposed Local Access Interchange concept includes necessary turn lanes and thru lanes to accommodate anticipated traffic volunles in the year 2030, including full build out of the TCAAP development. This includes two through lanes in each direction, a single left turn lane to the northbound TH 10 entrance ralnp, and two left turn lanes to the southbound TH 10 entrance ranlp. In addition, roadway shoulders are included on the right side for both directions of travel to accommodate disabled vehicles, motorists yielding to emergency vehicles, snow storage and removal, and more advanced bicyclists. AlTIulti-use trail is also proposed to accommodate pedestrians and less advanced bicyclists. The bridge deck width fOf this interchange concept is approximately 130 feet and is needed to provide the necessary lanes, shoulders, and traiL The tight dialnond interchange design being used on the west side ofTH J 0 does result in additional width on the bridge. Since the west ramp intersection on this interchange concept is pulled in "tight" to the lnainline, there is less space for left turn storage and results in the left turn lanes being side-by-side on the bridge. This results in a wider bridge deck of approxinlately 12~, or one Jane "vidth. Conceptual design includes conservative decision-making relative to project costs and impacts. During preliminary and final design, the roadway geon1etry and bridge deck width win be finalized based on nlore defined traffic needs, cost-effectiveness, and service life expectancy. Bridges typically have a service life of 50 years or more and are planned for accordingly. The need for two \vestbound thru lanes, two westbound left tU1l1 lanes, and shoulder width should be evaluated during preliminary design. MANKATO, MN · FAIRMON!, MN · SLEEPY EYE, MN · BURNSVILLE~ MN · CHASKA, MN WILlMAR, MN. RAMSE't MN · AMES, fA www.bolfon-menk.com An Equal Opportunity Employer City of Arden HiHs June 25, 2008 Page 2 of2 Frontage Road Design to Scherer Brothers The curvature of the frontage road west of the Local Access Interchange is the minimum needed to accommodate an interstate semitrailer exiting TH 10 and turning right to access the Scherer Brothers property. Moving the frontage road any closer to the exit ramp would result in trucks encroaching on oncoming traffic. 1'he proposed curvature of the frontage road is designed to accommodate passenger vehicles at approxitnately 15 mph. The close proximity of the frontage road and limited design speed around the curve present challenges for the ramp intersection traffic signal operations including inadequate visibility of the signal heads, restricted stacking space, and need for additional green time to accommodate slower progression of vehicles. The current design of the frontage road is very restrictive as proposed. Further design compromises would result in an inadequate roadway configuration incapable of accommodating vehicular traffic safely. I. t I:, ", ~ I I' ;! ;' ~i ~,',I" 'I ~ ! I r r i" ~ : (J\ ..~ o "c:;5 "<.0 , t .. ()) ,....). o ":j ..~ .9 -136,200- + N co >- S :c "'C o Legend 000 AM Peak (000) PM Peak 000 Daily ...--.. ...--.. 0 o~ 0 ...--.. L 10(10) o~...--.. L 10(30) ...--.. 0 "'I "'-' 0 ..q- ...--.. ...--.. 0 ~ "'-'ON NO O-r- 0' O-r-"'-' "'-' LO LO -r- ~ 1270(970) N~O '-1030(690) o "'-' "'-' "'-' ~ 0') -r- 0') 00 0 L 140(390) 00 L 540(310) L. t 810(160) .JtL. t 460(240) <C 0') -q-O') + r 350(150) .J 670(590) .. ~tr+ (430)80 j ~tr+ J tr+ (650)260 r+ ~ 1\.)1\.)00 (1210)510-' ~I\.)~ -"I\.) (130)30. ~w 0')00 C1101\.) ~o o ...--.. ...--.. 000 00 00 -. ...--.. ~ 00 (260)30 . ...--.. ...--.. ...--.. 00 ~Ol\.) I\.)OOW ............ ...--.. ...--.. ~ "'-' 0 C11~W ("J~ WI\.) ~..s:::. 8 ........... 000 ~w 00 ...................... ........... 00 ........... ........... ........... -136,000- Q) c: c: o ....., 0') c: .x Q) ....J E ca I ~ SEH Figure E-1 ,~ 1 0 Area 2012 Traffic Volumes lway Frontage Road Alternative E-1 96 area volumes 2012 network.fh11