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

Monday, June 15 through Wednesday July 22 - 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, June 15 to Wednesday, July 22 from 6:00 AM to 6:00 PM

Location 2: Vichy Springs to Wooden Valley Road
Wednesday, June 17 to Tuesday, July 21 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, 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.