California Department of Transportation

09/24/2026 | Press release | Distributed by Public on 09/24/2026 17:19

Update: Daytime lane closures on SR 121/Monticello Road for Erosion Repairs in Napa County

Update: Daytime lane closures on SR 121/Monticello Road for Erosion Repairs in Napa County

Published: Sep 24, 2026

Monday August 31 through Friday October 16 - 6:00 AM to 6:00 PM

Napa County - Caltrans has planned daytime lane closures with one-lane traffic control on State Route 121(SR 121)/ Monticello Road in Napa County. The lane closures are required to allow crews to safely complete erosion repair activities.

Construction activities continue at two locations:

Location 1: Circle Oaks Drive to Moskowite Corner
Monday, August 31 to Friday, October 16 from 6:00 AM to 6:00 PM

Location 2: Vichy Springs to Wooden Valley Road
Monday, August 31 to Friday, October 16 from 6:00 AM to 6:00 PM

Changeable message signs in the area will be activated to assist motorists. Please be prepared for possible delays and follow all posted signs while crews carry out these important improvements.

All work is weather dependent.

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 September 24, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on September 24, 2026 at 23:19 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 If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]