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<br />1~ <br /> <br />BOLTON & I'./IENK/ <br />Consulting Engineers & Surveyors <br />12224 Nicollet Avenue' Burnsville, MN 55337-1649 <br />Phone (952) 890-0509' FAX (952) 890-8065 <br /> <br />INC. <br /> <br />MEMORANDUM <br /> <br />Date: <br /> <br />April 10, 2008 <br /> <br />To: <br /> <br />Kristine (]iga, r.E. - Civil Engineer <br />Greg Hoag.- Public Works Director <br />City of Arden Hills <br /> <br />Front <br /> <br />Christopher S. Chromy, P.r:.. P.T.O.E. <br />Bolion & Menk, Inc. <br /> <br />RE: <br /> <br />Overview ofTHIO Altemative Alignments - April 9, 2008 <br />T!I 10 Local Access Interchange (TCAAP/Arden Manor) <br />BMI Project No. T42.22335 <br /> <br />On bchalrofthc City of Arden Hills, \VC have rcvic\vcd and summarized the referenced study completed <br />hy S.E.H. The purpose or the study was 10 develop and evaluate alternative alignments ror Tll 10 to <br />Jessen impacts to Arden Manor residential units associated with the Local Access Interchange on TH 10. <br />The study followed a rC<lsonablc plmming approach to evaluate potential alternatives relative to project <br />costs and propcliy impacts. The alternatives were designed consistent with applicable Mn/DOT design <br />standards. Planning-level construction costs estimates were prepared using Mn/DOT's Length Width <br />Depth (L\VD) method. This method estimates cOl1stmction costs based on the volullle of pavement <br />anticipated for the project and a cost multiplier developed Crom similar-type projects across the metro <br />area. Propel1y costs estimates were prepared using current market valuation. 'rhe alternatives were <br />prepared using sOllnd planning ,lIld engineering principles and provide a solid comparison ofthe costs <br />associated with each. <br /> <br />Studv Findifl!!s <br />Four (4) TH 10 alignment alternatives were developed and evaluated. Each altemative had a different <br />amount of alignment shin north and east of the existing location. Table I .- Overall Comparison <br />Summary from the rep0I1 is attached as a reference 10 study findings. III general, the more change in <br />alignment to the nOl1h and east results in less impact to Arden j\,'fallor and higher project costs. The <br />additiollill cost associated wilh reduced impact 10 residences west ofTI-I ]0 is summarized below: <br />/\IJ~rmlJLY_G IQtnLCost ge~l~J~n~~,?_11J)120ctg~1 ,6sttljJ.iQ!,H~_U:Joicct C..ps! <br />$2IAM 21 $0 <br />2 $28.2M 16 $6.8M ($1.36Mlresidcl1ce) <br />3 $29.3M II $7.9M ($790Klrcsidcl1cc) <br />,1 $33.4M 0 S12.0M (S570KJresidel1cc) <br /> <br />MANKATO, MN . FAIRMONl MN . SLEEPY EYE, MN . BURNSVtLLE, MN . CHASKA, MN <br />WtLLMAR. MN . RAMSEY, MN . AMES. IA <br />wv/v-./.bollon.menk.com <br />An Equal Opportunity [mpfover <br />