Every day from February 25th to Friday, March 28th
One-way Traffic Control is in place
Napa County – Caltrans continues to implement overnight full lane closures and continuous one-way reversing traffic control on SR 29 between Rutherford Road and Oakville Cross Road in Napa, Napa County. These closures are designed to help construction crews to expedite Phase 1 of the Culvert Project as they replace culverts and stabilize the roadway, with one-way reversing traffic control in place during the process. During Stage 1 of construction, crews will remove the Northbound roadway portion of the existing culvert and replace it with a cast in place concrete box culvert while traffic is shifted into a single lane for use by both directions of travel. Stage 1 is scheduled to be completed by March 28, 2026.
All work is weather dependent. When Stage 2 is underway, two traffic lanes will be available for motorists’ use.
Daytime: SR-29 One-way Traffic Control between Oakville Cross Road and Rutherford Road
- Daily one-way reverse traffic control until March 28th
Overnight: SR-29 Full Lane Closures between Oakville Cross Road and Rutherford Road.
- Between 10:00 PM to 6:00 AM for traffic shifts.
Flaggers will be present and Changeable Message Signs (CMS) signs will be posted to help the traveling public. Motorists are advised to expect delays and to leave a safe traveling distance between your vehicle and the vehicle ahead of you, and please #BeWorkZoneAlert.
Detours signs will be posted.
Detour Routes:
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.
For 24/7 traffic updates, follow 511.org: https://twitter.com/511SFBAY
Real-time traffic, click-on Caltrans Quick Map: http://quickmap.dot.ca.gov/
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