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SR37 Corridor Projects

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State Route 37 Virtual Tour

What's New

55-Hour Full Closure of State Route 37 Between Vallejo and Sonoma Scheduled Friday, October 23, from 10:00 PM to Monday October 26, 5:00 AM

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 Niño storm preparation. Crews are expediting work requiring full closures of the route.

Read the Advisory

Connection 37 Newsletter - First Issue Available Now

The official newsletter for State Route 37 has been released! Connection 37 showcases the past, present, and future of the route.

Read the Connection 37 Newsletter 

See all State Route 37 Meetings and Events

Fairground Drive in Vallejo, Divergent Diamond Interchange Visualization

ADAPT Assets Act - May 5, 2026

State Route 37 The Big Picture Button - A deep dive into State Route 37 Corridor History and the challenges it currently faces

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State Route 37 Documentation Button - See the work, see the possibilities and see resilience

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State Route 37 Planning Button - What we're doing today to secure your commute

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State Route 37 Contact Us Button - The best way to reach us.

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