TO: Board of Supervisors
FROM: Steven Lederer - Director of Public Works
REPORT BY: James Reese - Associate Engineer
SUBJECT: Approval of Plans and Specifications for the Ridgecrest Drive MPM 0.10 Roadway Slide Repair, RDS 25-26.
RECOMMENDATION
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Approve plans and specifications and authorize advertisement for sealed bids and opening of the bids at a time and location to be published by the Director of Public Works pursuant to Section 20150.8 of the Public Contracting Code for the Ridgecrest Drive Slide Repair Project, RDS 25-26, which is near 50 Ridgecrest Drive. (No Fiscal Impact; Discretionary)
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BACKGROUND
In early February 2025, a severe storm caused extensive damage across Napa County, including a major landslide on Ridgecrest Drive. In response, the County Board ratified a local emergency proclamation on February 18, 2025, and allocated $1,500,000 for the Ridgecrest Drive Slide Repair Project.
County crews responded immediately, working overnight to stabilize the affected roadway. On February 7, 2025, Public Works staff contacted ADKO Engineering, Inc.-previously selected through a qualifications-based selection process-to visit the site and on March 11, 2025 the Board approved a contract to prepare the Plans, Specifications, and Estimate (PS&E) for the project.
The proposed repair involves constructing a retaining wall supported by vertical steel piles and concrete lagging between the piles. The project site is located at Mile Post 0.10 on Ridgecrest Drive, within the Circle Oaks subdivision in rural Napa County.
With the PS&E now complete, staff is requesting authorization to advertise the project for construction bids. Once bids are received and reviewed, staff will return to the Board with a recommendation for awarding the construction contract.
Requested Action:
Approve plans and specifications and authorize advertisement for sealed bids and opening of the bids at a time and location to be published by the Director of Public Works pursuan...
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