California Department of Transportation

12/18/2025 | Press release | Distributed by Public on 12/18/2025 13:27

Emergency Lane Closure on Westbound SR-37 in Solano County due to SMART Track Work, Asphalt Repair; Traffic Affected for Multiple Counties

Emergency Lane Closure on Westbound SR-37 in Solano County due to SMART Track Work, Asphalt Repair; Traffic Affected for Multiple Counties

Published: Dec 18, 2025

Schedule: Closure expected to begin around 11 a.m. on Thursday, Dec. 18

Solano County and Sonoma County - Caltrans is scheduled to close Westbound State Route 37 at Mare Island (SR-37) around 11 a.m. on Thursday, Dec. 18 due to SMART track work and asphalt repair.

The closure is expected to last about four hours. Eastbound SR-37 traffic is unaffected.

Drivers will be detoured at the Walnut Avenue off-ramp in Mare Island. For a detour, see attached map.

Overhead signs have been activated to alert drivers.

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.

California Department of Transportation published this content on December 18, 2025, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on December 18, 2025 at 19:28 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 If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]