01-23-1978 Council Minutes - Laserfiche WebLink

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REGULAR MEETIPIG OF TIiE ORONO COUNCIL, JAPJUARY 23 , 1978 Page 33 Mr. Jim Olson, City Engineer, reviewed with the TAP7A�ER BRIDGE N0. 27529 City Council his letter dated. January 20 , 1978, which states: Re: Review of Plans and Specifications CSAH No. 15, County Project No. 7252 Tanager Bridge No. 27529 Pursuant to your request, we have reviewed the construction plans, the sample copy of a resolution approving the project, the proposal form, the specification, and proposed Construction Cooperative Agreement between the County of Hennepin and the City of Orono, supplied by your office for County Project No. 7252. The work included in C.P. 7252 consists of removing the existing Tanager Bridge and replacement with a new structure together with necessary grading, drainage, retaining walls and bituminous surfacing associated with the new structure. The existing bituminous surface on Co. Rd. 15 will be removed and replaced from approximately 90 feet south of the bridge to approximately 140 feet north of the bridge. Retaining walls are included on the westerly side of the new structure and Co. Rd. 15 consisting of 55 lin.ft, south of the bridge and 80 lin. ft, north of the bridge. The driven roadway across the new structure is indicated at 36 ft. in width. The Hennepin County Plans indicate a low beam elevation on the new bridge of 938.62 and a normal water elevation of 929.4, - resulting in a minimum channel clearance of 9.2 feet. The distance between piers is indicated at 40 feet, center to center, with 6 feet from pier to edge of rip rap at water line. The channel � bottom elevation is indicated at 923 at centerline and approximately 924 at the edges. There will be some channel grading involved at the new bridge. Relative to the Special Provisions of the Specifications, the following sections are of_interest to the City: Section S-1 Insurance, paragraph S-1.1 and S-1.2 Section S-6 Responsibility for Damage Claims, paragraph S-6.1 It may be advisable for the City attorney to check the adequacy of these sections. Section S-7 Air and Water Pollution, paragraphs S-7.1 through S�7.3 Provides detailed and comprehensive specifications for prevention of erosion into and contaminatioa of channel and water areas. Im- plies, but does not specifically state that debris, concrete chunks, (Continued)