Day Lane Closures for Westbound SR-37 Capital Preventive Maintenance Project in Marin County

Schedule: Tuesday, Feb. 3 through Friday, Feb. 6

Marin County - Caltrans will continue its Capital Preventive Maintenance project in February on Westbound State Route 37 (SR-37) in between US-101 and the Petaluma River Bridge in Novato for concrete barrier and final striping work.

There will be daytime closures on Westbound SR-37 from Tuesday, Feb. 3 through Friday, Feb. 6. Work will occur between about 9 a.m. and 5 p.m. each day.

The Westbound SR-37 connector ramp to Northbound US-101 is scheduled to be closed intermittently throughout the week from 9 a.m. until about 5 p.m. as well as the Hanna Ranch Road on-ramp to Westbound SR-37.

Detours
For the connector ramp, drivers should follow the detour to Bel Marin Keys Boulevard and re-enter Northbound US-101 from there. For the Hanna Ranch Road on-ramp closure, please use Eastbound SR-37 to Atherton Avenue and re-enter Westbound SR-37 from there.

All construction Is weather dependent.

This capital maintenance pavement rehabilitation project involves paving and median barrier work in Novato. The project will grind and re-pave the roadway between the Ignacio overhead to the Petaluma River Bridge - a stretch of about three miles.

Please drive with caution. Slow for the Cone Zone and Be Work Zone Alert. Caltrans thanks motorists for their patience while we work to maintain our state's highways, bridges, and tunnels.

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.