Monday August 31 through Wednesday September 30 - 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 Wednesday, September 30 from 6:00 AM to 6:00 PM
Location 2: Vichy Springs to Wooden Valley Road
Monday, August 31 to Wednesday, September 30 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.
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