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. 5. Meeting Date: 03/26/2019 By: Bruce Westby, Engineering/Public Works Information Title: Adopt Resolution #19-080 Approving Plans and Specifications and Authorizing Advertisements for Bids for Improvement Project #19-03, Wood Pond Hills and Chestnut Ridge Street Reconstructions Purpose/Background: Purpose: The purpose of this case is to adopt Resolution #19-080 approving plans and specifications and authorizing advertisements for bids for Improvement Project #19-03, Wood Pond Hills and Chestnut Ridge Street Reconstructions. Background: City Improvement Project No. 19-03 proposes to reconstruct streets within the Wood Pond Hills and Chestnut Ridge neighborhoods including 146th Avenue, Helium Street, and Krypton Street. The streets total approximately 3,310 linear feet (0.63 miles) in length. Maps are attached to this case showing the general location and overall scope of the proposed improvements. Existing Conditions These streets were constructed between 1992 and 1994 as urban sections using bituminous pavement, surmountable concrete curb and gutter, and concrete storm sewer. The streets were constructed to a width of 30-feet from face -of -curb to face -of -curb, and are generally centered within 60-foot wide right-of-ways. 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 1.6 to 5.0 inches thick, with a median thickness of 2.5-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 section ranges from 1.3 to 8.4 inches thick, with a median thickness of 4.1-inches. The pavement section was built on generally poorly graded sand with silt subgrade material generally considered suitable for pavement support with proper conditioning. 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 sections of the above referenced street segments were rated with a PASER rating of 2, with the exception of the south half of Krypton Street receiving a rating of 4. PASER ratings of 3 or less indicate the street requires reconstruction. Sanitary sewer and watermain infrastructure exist under each of the streets. These utilities were inspected and were found to be in good operating condition so no improvements are proposed at this time.