Crash Blocks Shoulder, Slows US-101 Southbound Traffic

MARIN, CA — A blocked shoulder is dragging down traffic on southbound U.S. Route 101 near Sausalito, where residual delays are building during the morning commute.

The crash sits just south of Conzelman Road, according to the California Highway Patrol, which warned drivers to expect slowdowns through the corridor. The right shoulder remains blocked, limiting space for merging and emergency access.

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Traffic continues to stack up as crews monitor roadways, with no immediate timeline for full clearance. Drivers moving through southern Marin County should plan for delays or consider alternate routes.