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  5. 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

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

State Route 37 Westbound emergency lane closure detour map. WB SR-37 at SR-29 Closed. WB SR-37 detour via connector off-ramp to SR-29; Right on SR-29 (Sonoma (Blvd); Continue on NB SR-29 (Broadway); Continue SR-29/SR-12; Left on SR-29/SR-121 (Carneros Hwy); Continue on SR-12/SR-121 (Carneros Hwy); Left on SR-12/SR-121 (Carneros Hwy/Fremont Dr); Left on SR-121 (Arnold Dr.); Continue on SR-121 (Arnold Dr,); Right on WB SR-37. Local traffic use EB SR-37. WB 37 follow signs for detour route.

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.