Agenda - Council - 06/28/2022 - Laserfiche WebLink

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CC Regular Session 5. 18. Meeting Date: 06/28/2022 Submitted For: Joe Feriancek, Engineering/Public Works By: Joe Feriancek, Engineering/Public Works Information Title Adopt Resolution#22-150 Approving Plans and Specifications and Authorizing Advertisements for Bids for Autumn Heights Street Reconstructions, Improvement Project#22-02 Purpose/Background: Purpose: The purpose of this case is to adopt Resolution#22-150 Approving Plans and Specifications and Authorizing Advertisements for Bids for Autumn Heights Street Reconstructions, Improvement Project#22-02. Background: City Improvement Project 22-02 proposes to reconstruct the streets within the Autumn Heights subdivision, generally located along both sides of Armstrong Boulevard between the 167th and 169th blocks. The streets total approximately 8,500 linear feet(1.61 miles)in length, and are 24-foot wide rural section with drainage swales along both sides of the streets. A street segment summary is attached to this case. Project History •2022—2031 Capital Improvement Program—listed as street reconstruction for 2022 •Resolution#21-194, adopted July 13, 2021; City Council ordered the City Engineer to request proposals for Topographic Survey, Geotechnical Evaluations and Utility Testing for 2022 Pavement Management Program prof ects. •Resolution#21-224, adopted August 10, 2021; City Council awarded a proposal to Hakanson Anderson for Topographic Survey, and Haugo Geotechnical Services for a geotechnical report of the project area. •Resolution#21-300, adopted October 26, 2021; City Council ordered the City Engineer to prepare plans and specifications for the improvement project. •June 21,2022; Public Works Committee gave recommendations for City Council approving plans and specifications and authorizing advertisement for bids for Autumn Heights Street Reconstructions, Improvement Project#22-02. Pavement History The streets within the subdivision were built between 1977 and 1988. Pavement maintenance has included an initial round of crack seal/seal coat improvements, and overlay between 1990 and 2002, followed by 2 more rounds of crack seal/seal coat improvements in 1997 and 2004. Maintenance crews have performed patching over the last several years, including extensive spray patching. 2021 PASER values were 2 for all street segments. PASER values of 2 are as low as any street segments within the City. Ground Penetrating Radar(GPR)was performed on the street segments. Bituminous pavement thickness averages were between 3.3 and 3.9 inches thick on the various street segments. Aggregate base thickness was found to vary between 3.1 and 4.0 inches thick. The weighted average total section thickness was 7.0 inches. Proposed Improvements Staff review of the geotechnical report found the majority of sub-base material to be poorly graded sand and poorly graded sand with silt,these materials are well suited for pavement support and are considered non-frost susceptible and are also free draining materials. An approximately 600-foot section of 167th Lane east of Armstrong Boulevard