The California Highway Patrol said that a crash on Monday affected traffic on Highway 101 in San Rafael.

Just before 5 p.m., CHP said southbound Highway 101, just south of Freitas Parkway, was closed due to a crash. Around 5:40 p.m., Caltrans said two right lanes had reopened, with the two left lanes still closed.

All lanes were reopened just before 6 p.m., Caltrans said.

***TRAFFIC ALERT*** SOUTHBOUND US-101 JUST SOUTH OF FREITAS PKWY, ALL LANES BLOCKED DUE TO TRAFFIC CRASH, UNKNOWN ETO, EXPECT DELAYS. pic.twitter.com/bSynz3g4qk — CHP Marin (@CHPMarin) October 6, 2025

There was no expected time of reopening.

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