Agenda - Council - 02/12/2018 - Laserfiche WebLink

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lour 1111.1siion: To work together to reiposihty grow our community, and to provide quality, coat -effective, and efficient government ierrlcas. CC Regular Session 7. 5. Meeting Date: 02/12/2018 By: Bruce Westby, Engineering/Public Works Information Title: Adopt Resolution #18-034 Approving Plans and Specifications and Authorizing Advertisements for Bids for River's Bend Street Reconstructions, Improvement Project #17-02 Purpose/Background: Purpose: The purpose of this case is to adopt Resolution #18-034 approving plans and specifications and authorizing advertisements for bids for River's Bend Street Reconstructions, Improvement Project #17-02. Background: Attached is a copy of the plans prepared by City staff for Improvement Project #17-02, River's Bend Street Reconstructions. This project proposes to reconstruct four street segments within the River's Bend residential neighborhood including; • 147th Lane from the west River's Bend plat line to Waco Street, • 148th Avenue from the west River's Bend plat line to Xkimo Street, • Xkimo Street between 147th Lane and 149th Avenue/Sunwood Drive, and • Yakima Street between 148th Avenue and 149th Avenue/Sunwood Drive. These street segments total approximately 2,774 feet in length as shown on the title sheet of the attached plans. These streets were constructed in 1985 using bituminous pavement and surmountable concrete curb and gutter. Based on field observations, record plan documents, and results from Braun Intertec's geotechnical report and ground penetrating radar (GPR) analysis, the bituminous pavement section ranges from 0.9 to 5.4 inches thick, the aggregate base ranges from 1.8 to 10.3 inches thick, and the pavement section was built on sandy subgrade materials generally considered suitable for pavement support. All streets are 30 feet wide from face -of -curb to face -of -curb, centered within 60-foot wide right-of-ways. City staff evaluates and rates the condition of pavement sections on all city streets on an annual basis using the Pavement and Surface Evaluation Rating (PASER) system. In the fall of 2016, these street segments received PASER ratings of 3. This indicates these street segments are past the point of applying overlay improvements and require complete reconstruction. City staff patch these streets annually, particularly before winter so the streets can be plowed without further damaging the pavement. Proposed improvements include removing and replacing all damaged concrete curb and gutter sections, and reconstructing the existing bituminous pavement section using the Full Depth Reclamation (FDR) process. The FDR process involves milling the entire existing bituminous pavement section, along with an inch or more of