Highway 12- Jameson Canyon Commuter Advisory

Highway 12-Jameson Canyon
Overnight Closures Scheduled For Week of January 13th  


NAPA AND SOLANO COUNTIES – The California Department of Transportation (Caltrans) will place safety barriers and stripe new sections of roadway as crews work to widen Highway 12 through Jameson Canyon in Napa and Solano Counties during the week of January 13th.

The work is in preparation of a major traffic switch near the Napa/Solano County Line which could on or after January 16th. The switch will put existing traffic on a new section of future westbound Highway 12. The work will also allow crews to complete this latest phase of construction which includes the final retaining wall.

Full Overnight Highway Closures-Starting Monday, January 13th

For the safety of crews and the motoring public, three nights of full highway closures on Highway 12 between Highway 29 and Red Top Road are scheduled starting January 13th. The full highway closures are scheduled to start on Monday, January 13th until the morning of Thursday, January 16th at 5 a.m. Closures will start each night Monday through Wednesday at 11 p.m. and conclude the following mornings at 5 a.m. All work is weather permitting.

Highway 12-Jameson Canyon Detour

During the overnight highway closures, eastbound Highway 12 motorists are advised to use southbound Highway 29 to eastbound Highway 37 to eastbound Interstate 80. Westbound Highway 12 motorists should use westbound Interstate 80 to westbound Highway 37 to northbound Highway 29.

Local access is available for Jameson Canyon residents and emergency vehicles only. The California Highway Patrol (CHP) will help direct motorists. Caltrans will also install changeable message signs. Motorists should allow for extra travel time. Weather permitting the entire project could be completed as early as summer 2014.

Additional project information is posted on the Caltrans’ Highway 12-Jameson Canyon webpage at: http://www.dot.ca.gov/dist4/12jamesoncanyon/

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Caltrans appreciates your patience as we work to improve our highways.