Agenda - Council - 11/14/2023 - Laserfiche WebLink

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5. 19. CC Regular Session Meeting Date: 11/14/2023 Primary Strategic Plan Initiative: Address infrastructure needs. Information Title Adopt Resolution#23-282 Accepting Stabilized Full-Depth Reclamation Design Proposal for MSA Alpine Drive Reconstruction, Improvement Project#24-11 Purpose/Background: Purpose: The purpose of this case is to adopt Resolution#23-282 accepting stabilized full-depth reclamation design proposals for MSA Alpine Drive Reconstruction, Improvement Project#24-11. Background: The 2023—2032 Capital Improvement Plan(CIP)identifies Alpine Drive between Puma Street and Armstrong Boulevard(CSAH 83) for street reconstruction in 2024. 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 the existing concrete curb and gutter, 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,Variolite Street between Alpine Drive and 173rd Avenue,both with excellent results. Additionally,this process was used in 2023 for the reconstruction of 167th Avenue between Nowthen Boulevard and Saint Francis Boulevard. 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. In Alpine Drive, excavating the subgrade adjacent to the existing curb and gutter risks damage to the curb from settling during construction, and which would increase overall project costs. 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. Staff sent the request for proposals to two (2) firms known to perform this type of work. One firm responded that they can not perform the work due to a backlog of work for existing clients. The one (1) quote received is tabulated below: STABILIZED FULL-DEPTH RECLAMATION MIX DESIGN PROPOSAL PROJECT AMERICAN ENGINEERING TESTING Alpine Drive Reconstruction $211875.00