Agenda - Public Works Committee - 03/15/2022

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Public Works Committee Meeting Date: 03/15/2022 Submitted For: Joe Feriancek, Engineering/Public Works By: Joe Feriancek, Engineering/Public Works 5.1. Title: Consider Recommending City Council Approving Plans and Specifications and Authorizing Advertisement for Bids for Sunwood Drive and Waco Street Reconstruction, Improvement Project #22-01 Purpose/Background: Purpose: The purpose of this case is to consider recommending City Council approving plans and specifications and authorizing advertisement for bids for Sunwood Drive and Waco Street Reconstruction, Improvement Project #22-01. Background: City Improvement Project 22-01 proposes to reconstruct Sunwood Drive between Trunk Highway 47 and Waco Street, and Waco Street between Sunwood Drive and 150th Avenue. The streets total approximately 2,500 lineal feet (0.48 miles) in length, and are 44 feet wide as measured to the face of curb. Project History • 2022 — 2031 Capital Improvement Program — listed as street reconstruction for 2022 • August 10, 2021 City Council accepted proposals for geotechnical report and topographic survey • August 24, 2021 City Council accepted proposals for utility testing • October 26, 2021 City Council ordered plans and specifications • December 14, 2021 City Council authorized reconstruction of Waco Street to existing pavement widths Pavement History Sunwood Drive and Waco Street were constructed in 1985 and 1992 respectively. Pavement maintenance has included crack seal / seal coat improvements in 1992 (Sunwood Drive), 2006, 2013. Maintenance crews have performed patching over the last several years, including extensive spray patching. No pavement overlay improvements have been performed on these street segments. 2021 PASER values were 4 for Sunwood Drive and 3 for Waco Street. Ground Penetrating Radar (GPR) was performed on the street segments. Bituminous pavement thickness was found to have an average thickness of 4.20 inches on Sunwood Drive and 3.9 inches on Waco Street. GPR was not able to reliably identify the aggregate base thickness, however, the soil borings performed as part of the geotechnical report found an average of 6.4 inches. Proposed Improvements Sunwood Drive and Waco Street are Municipal State Aid (MSA) streets, and must comply with State Aid design requirements. MSA design requires these to be a 10-ton design. Based on the traffic counts performed in 2021 (1,800 ADT Sunwood, 580 ADT Waco), the required pavement section is 5" aggregate base and 4" bituminous pavement. Staff review found the existing pedestrian ramps within the project area did not meet current ADA requirements, therefore all six pedestrian ramps will need to be removed and replaced. The concrete curb and gutter were found to generally be in good condition, and only spot repairs are proposed. Staff is proposing minimal impacts to the existing bituminous trail with the project beyond what is required for matching into the new pedestrian ramps. The south leg of trail at the intersection of Sunwood Drive and Trunk Highway 47 is proposed to be straightened, the