California Department of Transportation
03/30/2026 | Press release | Distributed by Public on 03/30/2026 16:49
Overnight Lane Closures on State Route 121 in Napa, Napa County
Overnight Lane Closures on State Route 121 in Napa, Napa County
Published: Mar 30, 2026
From Sunday, March 29 through May 31, 7:00 PM to 6:00 AM
Napa County - Caltrans will perform scheduled overnight lane closures along State Route 121 between Vichy Avenue and Wooden Valley Road in Napa, Napa County. The closures are necessary to allow crews to safely replace existing roadway signs and improve signage visibility.
The work began Sunday March 29 and will continue through May 31 from 7:00 PM to 6:00 AM. Changeable Message Signs (CMS) will alert drivers ahead of closures. Motorists should expect delays, reduce speed, and plan extra travel time.
Overnight lane closures:
SR-121, Between Vichy Avenue & Wooden Valley Road
Sunday - Thursday 7:00 PM - 6:00 AM:
*All work is weather dependent and subject to change*
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/
California Department of Transportation published this content on March 30, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on March 30, 2026 at 22:52 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]