Agenda - Council - 06/13/1995 - Laserfiche WebLink

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I ,I HECEIVE BIDS AND AWARD CONTRACT FOR E 1995 STREET MAINTENANCE PROGRAM By: Steve Jankowski, City Engineer CASE # Background: On February 14, ~995, a public hearing was held on the 1995 Street Maintenance Program. The Council ord~ed preparation of plans and specifications on April 25, 1995, following the 60-day comnhent period following the public hearing, and authorized bids on May 9, I995. This year's prog 'am includes ten separate projects of which eight will consist of crack filling, followed ~y a chip sealcoating. Under this year's program, 7.14 miles of roadway will receive this type of maintenance, including 1.81 miles of 153/155 Avenue between C.S.A.H. #5 an Ramsey Boulevard. Two projects involve one and one-half inch bituminous overl ty, covering 4.33 miles of City street. As in previous y,~ars, a single contract document has been prepared for the street program which has been s{~parated into three major work divisions (A) crack filling; (B) sealcoating; and (C) bituminous overlay work. Sealed bids were received on Wednesday, June 7, 1995, and a copyiof the bid tabulation is attached. This year we ha~e requested an alternate price on the sealcoating portion of the work for utilizing a fractt/~red granite chip as aggregate cover for the bituminous, in place of the rounded pea gr[tvel which we have used in the past. Many of our neighboring communities, inoluding Anoka and Coon Rapids, are using this fractured granite chip. The advantages of thib fractured granite chip includes (1) better skid resistance since it provides a rougher surfac~ ~; (2) the granite is harder than the pea gravel causing less wear of the aggregate; and (3) less potential for the chip to be dislodged from turning tires. The disadvantages in~ :lude its higher costs, approximately 25 percent more than the pea gravel. It is our opinion hat the added cost of the fractured granite chip is justified only on project //95-04, which is the sealcoating of 153/155 Avenue from C.S.A.H.//5 to C.R. #56. The better skid resist ince, particularly in view of the curves on this roadway, and the higher amount of traffic make this a logical project to evaluate the performance of this chip. Analysis Of Bid ~ rice ? The unit's prices for the crack £flling (Division A) and the bituminous overlays (Division C) came in 11% atld 7.8%, respectively, below those estimated in the feasibility study. However, the un~ price for sealcoat came in 22.4% over the feasibility study estimate. The table below illus[rates the recent unit price history associated with our crack fill/sealcoat program, which ~ppears to fluctuate considerably from year to year.