Agenda - Council - 02/11/2020 - Laserfiche WebLink

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Public Works Committee 5. 3. Meeting Date: 01/21/2020 By: Bruce Westby, Engineering/Public Works Title: Consider City Council Recommendation to Accept Feasibility Report for 2020 Pavement Overlay Improvements, Improvement Project No. 20-02 Purpose/Background: Purpose: The purpose of this case is to consider providing a City Council recommendation to accept the Feasibility Report for 2020 Pavement Overlay Improvements, Improvement Project No. 20-02. Background: Pavement and Surface Evaluation Rating (PASER) values are assigned annually to all public street segments. Street segments with a PASER value between 3 and 6 indicates the segments may be good candidates for overlays. Overlays are typically completed every 20 years on bituminous pavement sections, until such time that the street needs to be reconstructed. Overlay improvements increase the structural capacity of the pavement section, and help prevent stormwater runoff from infiltrating into the underlying aggregate base and subgrade sections. Overlays are one tool the City uses to cost-effectively maintain streets over their serviceable life, which when properly constructed is anticipated to be 60 years. Attached is a figure showing the street segments proposed to receive overlay improvements in 2020 per the 2020 — 2029 Capital Improvement Program (CIP). The streets are located in the following residential developments: • Klemish and Flores • Sunfish Square • Sunfish Square 2nd Addition • Windemere Woods • Windemere Woods 2nd Addition On December 10, 2019, the City Council ordered Staff to prepare a Feasibility Report to explore numerous aspects of the proposed improvements including whether they are feasible, necessary and cost-effective, whether they should be completed alone or in conjunction with other improvements, and to explore design options, if necessary. Estimated project costs and funding sources are also being explored in more detail than was done to develop the Capital Improvement Program (CIP). A preliminary project schedule is also being developed within the Feasibility Report. (This paragraph was modified January 17th) A copy of the draft Feasibility Report is attached. In summary, the proposed improvements were not found to be feasible and cost-effective from an engineering standpoint, and Staff does not support construction of the 2020 bituminous overlays as identified within the current CIP. These streets would be most cost-effectively maintained by reconstructing them after such time as their PASER ratings fall to a rating of 3 or below. Instead, Staff recommends reviewing the current CIP to identify other street segments for 2020 mill and overlay improvements based on available funding, and authorizing Staff to prepare a new Feasibility Report for proposed 2020 mill and overlay improvements under City Improvement Project No. 20-02. The proposed improvements are designated as City Improvement Project #20-02, 2020 Overlay Improvements.