Welcome to the Napa County Roads Division. We are committed to maintaining and preserving the Napa County road system so that it is safe, reliable, and accessible for all users.


The Roads division is responsible for maintaining approximately 450 miles of public roads, 79 bridges and 50 major drainage structures within the unincorporated area of the County. The division is active in other road-related safety efforts such as vegetation management and maintenance of structures, drainage facilities, guardrails, traffic signs, signals, and pavement markings.

Related Documents

Appeal of Left Turn Lane required for Cuvaison Winery

The project is located at 1221 Duhig Road and approximately 750 feet west of the intersection with Highway 12 / 121. The Cuvaison Winery requested a use permit modification that would increase traffic on Duhig Road and is required to construct a left turn lane from Duhig Road into the driveway to the Winery.  The appeal to the Board of Supervisors is to allow an exception from the Napa County Roads and Street Standards and to not require a left turn lane.  More information about the appeal is available at the Planning, Building, and Environmental Services webpage.