Agenda - Public Works Committee - 03/16/2020

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Public Works Committee 5. 3. Meeting Date: 03/16/2020 By: Bruce Westby, Engineering/Public Works Title: Consider Recommendation to City Council to Accept Feasibility Report for Amended 2020 Pavement Overlay Improvements, Improvement Project No. 20-02A Purpose/Background: Purpose: The purpose of this case is to consider providing a recommendation to the City Council to accept the Feasibility Report for the Amended 2020 Pavement Overlay Improvements, Improvement Project No. 20-02A. Background: On December 10, 2019, the City Council ordered Staff to prepare a Feasibility Report to explore proposed mill and overlay improvements to streets in the Klemish and Flores, Sunfish Square, and Windemere Woods neighborhoods in 2020 per the 2020 — 2029 Capital Improvement Program (CIP). This was designated as City Improvement Project No. 20-02. In summary, the proposed improvements were not found to be feasible and cost-effective from an engineering standpoint, so Staff recommended not completing such improvements in 2020. Instead, these streets would be most cost-effectively maintained by reconstructing them with a full -depth reclamation project after their PASER ratings fall to a rating of 3 or below. On February 24, 2020, the City Council ordered a Feasibility Report for amended 2020 mill and overlay improvements, designated as City Improvement Project No. 20-02A. This project proposed to complete 2-inch mill and overlay improvements on all streets within Regency Pond 1st, 2nd and 3rd Additions and Business Park 95, which are programmed in the 2020 — 2029 Capital Improvement Program (CIP) for mill and overlay improvements in 2022 and 2024 respectively. Based on City records and observed pavement conditions, Staff felt these streets would support 2-inch mill and overlay improvements in 2020. WSB and Associates was enlisted to perform pavement forensics analysis on the pavement on each street segment to verify that the thickness and structural capacity of the existing pavement sections would be adequate to support 2-inch mill and overlay improvements. Pavement cores were extracted from each street segment on March 2, 2020. Unfortunately, the cores revealed that the pavement on most of the street segments is either too thin, or is in such poor condition, that 2-inch mill and overlay improvements are not feasible. A copy of the forensics report prepared by WSB and Associates is included in the appendix of the Feasibility Report attached to this case. Timeframe: Staff anticipates that 20 minutes will be needed to present this case and respond to questions. Observations/Alternatives: Alternative # 1 — Motion to recommend that the City Council accept the Feasibility Report for Amended 2020 Pavement Overlay Improvements, Improvement Project No. 20-02A. Alternative #2 — Motion of other. Funding Source: