TO: Board of Supervisors
FROM: Steven Lederer, Director of Public Works
REPORT BY: Sonja El-Wakil, Associate Engineer
SUBJECT: Approval of Plans and Specifications, and Authorization to Advertise the “Measure U Solano Avenue Pavement Repair Project,” RDS 25-01
RECOMMENDATION
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Approval of plans and specifications for the “Measure U Solano Avenue Pavement Repair Project,” RDS 25-01 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 Public Contract Code section 20150.8. (No Fiscal Impact)
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BACKGROUND
The Solano Avenue roadway repairs were identified through the County’s procedure to do roadway maintenance based on Pavement Condition Index (PCI), an overall measure of the condition of the road surface developed by the United Sates Army Corps of Engineers and later standardized by American Society for Testing and Materials (ASTM). The PCI shows a numerical index ranging from 0 to 100, with 100 being a best roadway condition that is anticipated to support 20 years of use.
Solano Avenue from Locust Avenue (City of Napa limit) to Vineyard View Drive (Town of Yountville limit) (3.2 miles) (PCI varies, as low as 19) will install new hot mix asphalt surfacing over a full-depth reclamation treatment. The work is scheduled to occur on Solano Avenue, from the City of Napa Limit (Locust Ave) to the Town of Yountville limit (Vineyard View Dr). The roadway is now in varying condition, including “failed” with 81% of the recorded PCIs between 14 and 27. Solano Avenue has extensive amounts of distress affecting the speed and flow of traffic. The Project will result in safer travel ways for the public and increased road durability to meet the continually increased traffic demand of the road. The Project will improve the PCI to 100, with a renewed life span of 20 years.
Additionally, the City of Napa is working in cooperation with Napa County developing a cost share agreement to fund the portions of the work developed by the City of Napa Public Works Department, within city limits. Similarly, the Project adjacent to the Oak Knoll Resort at 5091 Solano Avenue includes overlay and pavement markings for a required left-turn lane road widening, per the County’s issued use permit. The cost for this portion of work is to be paid for by the Oak Knoll Resort. The County is seeking to work in cooperation with neighbors in order to minimize construction impacts on the neighborhood and traveling public, as well as preserving the life of the pavement by combining the work, instead of creating unnecessary joints that would weaken the pavement. These agreements will be brought to the Napa County Board of Supervisors for approval with the construction award following the bid opening currently scheduled for March 12, 2026.
On June 24, 2025, the Board of Supervisors approved an authorization of $300,000 to create the project and provide starter funds for design. At the start of the 2026 fiscal year, $4,000,000 was authorized approved to fund the project design and some of the construction phase. On December 9, 2025, the Board of Supervisors approved an agreement with TRC Engineers, Inc. to design the project. The estimated total cost of the project is approximately $5,500,000. Final costs will be confirmed through a competitive bidding process.
The design is now nearing completion and project is ready to be advertised. Construction is anticipated to occur during the summer of 2026, with carry over into Fiscal Year 2026-27. Staff will return to the Board of Supervisors at a later date to request approval of the contract award with anticipated required funding for construction and the City of Napa and Oak Knoll Resort cost share agreements are ready for approval.
Requested Actions:
1. Approval of plans and specifications for the “Measure U Solano Avenue Pavement Repair Project,” RDS 25-01, 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.
FISCAL & STRATEGIC PLAN IMPACT
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Is there a Fiscal Impact? |
No |
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Is it currently budgeted? |
No |
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Is it Mandatory or Discretionary? |
Discretionary |
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Discretionary Justification: |
On June 24, 2025, $300,000 was approved to partially fund the design work for this project (24033). At the start of the 2026 fiscal year, $4,000,000 was authorized approved to fund the project design and some of the construction phase. Approval is necessary to move forward with needed improvements. |
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Is the general fund affected? |
No |
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Future fiscal impact: |
Staff will return at a later date to request another budget amendment if necessary to fully fund the project. |
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Consequences if not approved: |
The required roadway repairs will be delayed. |
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Additional Information: |
Strategic Initiative: Build Healthy, Connected Communities |
ENVIRONMENTAL IMPACT
ENVIRONMENTAL DETERMINATION: Consideration and possible adoption of a Categorical Exemption Class 1 and Class 2: It has been determined that this type of project does not have a significant effect on the environment and is exempt from the California Environmental Quality Act. [See Class 1 (“Existing Facilities”) and Class 2: (“Replacement or Reconstruction”) which may be found in the guidelines for the implementation of the California Environmental Quality Act at 14 CCR §15301 and 14 CCR §15302; see also Napa County’s Local Procedures for Implementing the California Environmental Quality Act, Appendix B.]