1995 Working Papers - Laserfiche WebLink

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MEMORANDUM DATE: TO: FROM: SUBJECT: December 12,1994 Ryan Schroeder, City Administrator /111 Jim Gromberg, Economic Development coordinator(;fO Bridge Alignments for Land Use Plan Update I have reviewed the numbers generated with regard to the costs associated with each bridge alignment for the Comprehensive Land Use Plan Update. The following criteria was used for this evaluation: · Construction cost of roadway is estimated at $150/foot, with bridge construction estimated at $1,500/foot. For the western alignment, an extension of County Road #116 beyond its present location of 7,841 feet would be necessary. An extension to Puma Street N.W. is not assumed here. The north/south roadway is estimated at 5,793.48 feet, for a total project length from the river bank: of approximately 13,634 feet. It should be noted that Anoka County currently has no plans to extend County Road #116 past Armstrong Boulevard N.W. As noted below, western alignment Route C would require acquisition and construction costs above the base western alignment that has been assumed through this process. This occurs in order to facilitate the desired road curvature from north-south to east-west. The easterly alignment requires an extension of County Road #116 to Ramsey Boulevard N.W. of 2,643 feet, to Armstrong Boulevard N.W. of 2,672 feet. The north/south roadway is estimated at 2,208.49 feet, for a total project length from the riverbank of approximately 7,523.49 feet. The County Road #116 extension to Armstrong Boulevard N.W. is scheduled for 1999. Construction cost and property acquisition within the City of Dayton was not considered. Bridge construction costs used the edge of right-of-way to edge of right-of-way. Acquisition costs assume $7,OOO/acre. No right-of-way or construction impacts are assumed beyond the roadways under discussion. · Since both routes require a possible interchange with Highway #10, no figures were previously included in cost estimates. · Based upon discussions with Minnesota Department of Transportation, a diamond interchange likely would require approximately 800 feet in an east-west direction from the center of the bridge crossing and 400 feet in a north-south direction. Other types of interchanges may require differing easement lengths (Cyrus Knutson, MnDOT, 582-1387). Aligning the interchange with the current center of Highway # 1 0 would result in the following effects on the easterly and westerly alignments: · The attached drawings allow for a 1,200 foot approach in the east-west direction and 450 feet in the north-south direction. Alignment Easterly Westerly - Route A Westerly - Route B Westerly - Route C* Land Value $119,600 40,700 28,400 74,200 Buildin~ Values 140,400 90,700 61,900 o Cost $260,000 131,400 90,300 74,200 * This route would require a significant amount of additional road right-of-way to be purchased