Agenda - Council - 03/28/2023 - Laserfiche WebLink

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CC Regular Session Meeting Date: 03/28/2023 Submitted For: Bruce Westby, Engineering/Public Works By: Joe Feriancek, Engineering/Public Works Information Title Adopt Resolution #23-070 Accepting Stabilized Full -Depth Reclamation Design Proposals for Improvement Project #23 -04, 167th Avenue Reconstruction Purpose/Background: Purpose: The purpose of this case is to adopt Resolution #23-070 accepting stabilized full -depth reclamation design proposals for Improvement Project #23-04, 167th Avenue Reconstruction. Background: The current 2022 — 2031 10-Year Capital Improvement Plan (CIP) proposes the reconstruction of 167th Avenue between Nowthen Boulevard and Trunk Highway 47 in 2023. Bolton & Menk was hired to prepare final plans and specifications for these improvements. To meet the required MSA design standards, several pavement sections were considered. Stabilized Full -Depth Reclamation (SFDR) was determined to be the most cost-effective method of reconstruction. This process involves reclamation (grinding in -place) of the existing bituminous pavement plus a portion of the underlying aggregate base. Excess reclaimed material is then removed as needed so the new pavement will match into existing shoulders, driveways, and cross streets. The remaining material receives liquid asphalt emulsion, which is then mixed in, rolled and compacted. Once compacted, the SFDR can be opened up to traffic, and gains strength with the further compaction of vehicle traffic. The City has recently completed an SFDR project on Sunwood Drive between Ramsey Boulevard and Bunker Lake Boulevard and Variolite Street between Alpine Drive and 173rd Avenue, both with excellent results. Stabilizing the reclamation allows for a thinner overall pavement section, avoiding the need to excavate below the existing aggregate base to make costly subgrade corrections. Staff is confident that the SFDR process will provide as long of a life for the new pavement section as a full reconstruction with subgrade corrections would, but at a significantly lower cost. To be eligible for Municipal State Aid (MSA) funding, MSA review and approval must be complete before opening bids for these improvements. The SFDR mix design is a requirement prior to MSA final approval. Both firms indicated it will take approximately 2 months from the time authorization is given to produce the final SFDR mix design, as both field work and extensive lab work is required. Because of the design timeframe, starting this work is critical to keep the 167 th Avenue reconstruction on schedule for completion in 2023. Quotes received for the Stabilized Full -Depth Reclamation Design are below: STABILIZED FULL -DEPTH RECLAMATION MIX DESIGN PROPOSAL Project Braun Intertec American Engineering Testing 16 t7 h Avenue Reconstruction $181065.00 1$201630.00 Braun Intertec submitted the lowest total responsible quote. Based on the submitted quotes, Staff recommends accepting the proposals for stabilized full -depth reclamation mix design services from Braun Intertec.