Agenda - Council - 03/26/2019 - Laserfiche WebLink

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Our !Almon: To work together to respcaibty grow Our community, and to provide quality, COM4ffeciive, and efficient government invoices. CC Regular Session 7. 4. Meeting Date: 03/26/2019 By: Bruce Westby, Engineering/Public Works Information Title: Adopt Resolution #19-079 Approving Plans and Specifications and Authorizing Advertisements for Bids for Improvement Project #19-01, Ford Brook Estates Street Reconstruction Purpose/Background: Purpose: The purpose of this case is to adopt Resolution #19-079 approving plans and specifications and authorizing advertisements for bids for Improvement Project #19-01, Ford Brook Estates Street Reconstruction. Background: City Improvement Project No. 19-01 proposes to reconstruct 180th Lane and Krypton Street in the Ford Brook Estates neighborhood. These streets total approximately 860 linear feet (0.16 miles) in length. Maps are attached to this case showing the general location and overall scope of the proposed improvements. Existing Conditions Krypton Street and 180th Lane were constructed in 1981 as rural sections with bituminous pavement at a width of 24 feet. Both streets are generally centered within a 66-foot wide right-of-way. Attached is a street segments summary sheet detailing segment lengths, widths, curb type, 2017 PASER ratings, construction year, maintenance history, and pavement section information obtained from ground penetrating radar readings. The existing bituminous pavement section ranges from 1.2 to 6.4 inches thick, with a median thickness of 4.3 inches, as determined from Ground Penetrating Radar (GPR) analysis performed by Braun Intertec in 2017, as well as from field observations and record plan documents. The existing aggregate base ranges from 2.4 to 6.8 inches thick, with a median thickness of 4.1 inches. The pavement section was built on silty sand and lean clay subgrade materials. Clay subgrade is not good for pavement support and typically requires subgrade corrections. The City evaluates and rates the condition of pavement sections on all City streets on an annual basis using the Pavement Surface Evaluation and Rating (PASER) system. In the summer of 2018, the pavement section of the above referenced street segments were rated with a PASER rating of 2 which indicates these streets require complete reconstruction. Sanitary sewer and watermain do not exist in this neighborhood. The storm sewer system consists of ditches along both sides of the streets within the right-of-way and drainage and utility easements. Storm runoff is generally carried in the ditches to the ditch along TH 47 and directed north to Ford Brook.