Nighttime Closures on State Route 29 from Sierra Avenue to Napa River Bridge

Wednesday, August 20 to Thursday August 28

Napa County - Caltrans continues repaving a 6.2-mile section of State Route 29 (SR-29) in Napa County between the Napa River (Butler) Bridge and Sierra Avenue on Wednesday, August 20, through Thursday, August 28, 2025. The repaving includes all Northbound and Southbound traffic lanes, shoulders, and ramps.

On Wednesday August 20 from 8:00 PM to Thursday August 21 at 5:00 AM, the intersection of State Route-29/State Route-121 and State Route 12 will be closed for overnight paving operations.

As a detour, motorists are advised to use Golden Gate Drive from Imola Avenue to Stanley Lane to SR-12.

All work depends on weather.

For 24/7 traffic updates, please visit 511.org: https://x.com/511SFBay
For real-time information, visit Caltrans QuickMap: https://quickmap.dot.ca.gov
Follow us on X: https://x.com/CaltransD4
Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.