SR-29 Culvert Project in Napa County
One-Way Traffic Control in effect on State Route 29 (SR-29) for Culvert Work in Between Rutherford, Oakville in Napa County.
Crews will remove the existing culvert and replace it with a cast in place box culvert.
Construction Schedule
This emergency project is expected to last until spring, 2026. All work is weather dependent. Future traffic advisories will be sent out if dates or times change.
- Caltrans has reverse one-way traffic control of State Route 29 (SR-29) in effect 24 hours a day, 7 days a week for culvert replacement work and road stabilization in between Rutherford and Oakville roads (south of Glos Lane).
- Flaggers will be present and Changeable Message Signs (CMS) signs will be posted to help the traveling public.
Video Traffic Advisory, March 17, 2026
Detours
Detour SR-29 Northbound toward St. Helena/Calistoga
- Turn right onto Oakville Cross Road
- Turn Left onto Silverado Trail Road
- Turn Left onto SR-128 to Rutherford to get onto SR-29
Detour SR-29 Southbound toward the city of Napa
- Turn left onto SR-128 in Rutherford
- Turn right onto Silverado Road
- Turn right onto Oakville Cross Road to get onto SR-29.