Monday through Friday Closure of Bike Path near US-101 at San Antonio Road due to Construction Work in Marin County


Bicyclists have access to path near San Antonio Road on weekends

Map showing the construction area around US 101 and San Antonio Road in Marin County, CA. Map includes the bike path detours outlined in the traffic advisory.MARIN COUNTY AND SONOMA COUNTY- Caltrans has scheduled Monday through Friday closures of the bike path near San Antonio Road, which runs under US-101 between Petaluma and Novato, to allow crews to install scour protection along the bridge.

To ensure the safety of workers and bicyclists, weekly closures of the San Antonio Road bike path will be from 6 a.m. Monday through 5 p.m. Friday until the project is completed. Bicyclists are able to access the San Antonio Road bike path on Saturdays and Sundays.

For bicyclists heading southbound toward Novato, the alternative route is to access Petaluma Boulevard to D Street to San Antonio Road where bicyclists can access the path at Olompali State Park, while those heading northbound toward Petaluma will need to go westbound on San Antonio Road, then take D Street to Petaluma Boulevard.

The project near San Antonio Road is expected to be completed by the beginning of September.

On Redwood Boulevard, the temporary bike path was opened to the public on July 21, 2023, where Caltrans is performing emergency work to repair a landslide. Cyclists now are using the path through the construction limits on Redwood.

Vehicle access through the construction zone on Redwood will continue to be closed. Vehicle traffic on Redwood Boulevard is scheduled to be open in the fall.

Caltrans thanks motorists and bicyclists for their patience while we work to maintain our state's highways, bridges, and tunnels.

For real-time traffic, click on Caltrans QuickMap:

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Photo of two bicyclists on a bike path near Highway 101 and San Antonio Road in Marin County.