TO: Board of Supervisors
FROM: Steven Lederer, Director of Public Works
REPORT BY: Frank Lucido, Engineering Manager
SUBJECT: Approval of Plans and Specifications and Authorization to Advertise for Bids for the "Rossi Bridge Phase 1, RDS 25-25" project.
RECOMMENDATION
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Approve the Plans and Specifications for the "Rossi Bridge Phase 1, RDS 25-25" project and authorization to advertise for sealed bids and opening of the bids at a time, date, and location to be published by the Director of Public Works pursuant to Section 20150.8 of the Public Contract Code. (No Fiscal Impact)
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BACKGROUND
The crossing on Rossi Road that bridges over Conn Creek is unique in that it was originally constructed by private owners in the early 1900's by placing three iron culverts in the creek and placing soil on top which partially impounded the creek. In the late 1920's the County assumed responsibility for the road and constructed an additional concrete box culvert and headwall to allow for more capacity. In early February of 2025, a storm event caused significant damage around Napa County including the Rossi Crossing. One of the iron culverts collapsed and the concrete headwall was severely damaged. As a result, the County had to close Rossi Road at the location, which is the only public access to a business and 7 or 8 residences as the site was too unstable. A private property owner allowed limited local traffic access through their property while the site dried out. Eventually, road crews were able to remove some oversaturated soil, the collapsed culvert and place temporary stabilization measures that allowed reopening of the road on March 27, 2025.
On February 7, 2025, a task order was executed for drilling, surveying and preliminary design for the project. The County Board ratified a local emergency proclamation on February 18, 2025, and approved $2,000,000 in funding for the Rossi Road Bridge Repair Project. On March 11, 2025, the Board approved a $348,447 contrac...
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