Why is this work needed? In July 2025, Caltrans' Structures Maintenance and Investigations team identified corrosion on the steel columns supporting the Appian Way Overcrossing abutment during a ...

Napa County – Caltrans is scheduled to start overnight lane closures (one-way traffic control) along the 11.7-mile section of State Route 29 known as Lincoln Avenue in Napa County between the ...

To complete critical bridge maintenance, Caltrans construction is planning a long term full closure of the southbound Appian Way Overcrossing near Interstate 80 (I-80) to replace and widen the ...

Solano, Napa and Sonoma Counties – Caltrans District 4 will be implementing multiple closures on SR-37 in both Eastbound (EB) and Westbound (WB) directions as part of emergency preparedness for El ...

Schedule: Friday, October 23rd from 10 p.m. to 6 a.m. Contra Costa County — Caltrans maintenance has scheduled one-way traffic control on the Antioch Bridge (SR-160), beginning Friday Oct. 23 from 10 ...

Sonoma County – Caltrans has scheduled daytime one-way traffic control for construction work on State Route (SR1) just north of Valley Ford in Sonoma County. Construction is scheduled to begin on ...

Marin County — Caltrans will continue its Capital Preventive Maintenance project along US-101 in October for paving as well as permanent pavement striping. The following southbound on-ramps ramps are ...

Caltrans is asking California drivers to Slow for the Cone Zone, Move Over and drive without distraction or impairment in ...

Beginning at 7 p.m. Friday, Oct. 9, until 9 a.m. on Saturday Oct.10. Contra Costa County — Caltrans has updated the scheduled closures for sound wall replacement on El Cerro Boulevard along southbound ...

San Mateo County ― Caltrans has scheduled intermittent ramp and lane closures of U.S. 101 in San Mateo County to allow crews to perform paving, guardrail, drainage, and electrical work. This phase of ...

MONTEREY COUNTY — Travelers on Highway 1 near Point Sur will encounter full overnight closures beginning Monday, October 12. The full closure will take place from 11 pm to 5 am through Thursday, ...

Marin County — Caltrans will continue its Capital Preventive Maintenance project along US-101 in October for paving as well as temporary and permanent pavement striping. Turn right on to Civic Center ...