CA · Highway

US-101 S Accidents & Crashes

US-101 S has recorded 3,450 traffic crashes in California since 2024, with no fatalities on record. In the last 24 hours, 20 new crashes were reported. The highest crash volumes are concentrated near Santa Clara and Marin.

Data is sourced from the California Crash Records System (CCRS), maintained by the California Highway Patrol and updated daily, and the CA 511 live incident feed, refreshed every 15 minutes. Records include crash severity, injury data, vehicle information, and precise geographic coordinates. Last updated Oct. 27, 2026.

Breakdown by type: 327 accident.

327

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

1

Today

Reported since midnight

Today's Accidents Today's Fatalities

Crash locations on US-101 S. Click a marker to view details.

Crash Records

US-101 S Incidents 327 results

327 accident

CHP : Traffic Hazard on US-101 Southbound at CA-12 W (Santa Rosa). Off Ramp affected. Expect delays.

Sonoma 11 hours, 20 minutes ago

CHP : Flooding on US-101 Southbound entering at Hamilton Dr (Mill Valley). On Ramp affected. Expect delays.

Marin 15 hours, 20 minutes ago

CHP : Disabled vehicle on US-101 Southbound north of E Millbrae Ave (Millbrae). Off Ramp affected. Expect delays.

San Mateo 1 day, 10 hours ago

CHP : Traffic Hazard on US-101 Southbound at Silver Ave (San Francisco). Off Ramp affected. Expect delays.

San Francisco 1 day, 13 hours ago

CHP : Severe traffic alert and Traffic Collision with Injuries and Overturned vehicle on US-101 Southbound north of Blossom Hill Rd (San Jose). Right and center lanes blocked. Expect delays.

Santa Clara 1 day, 21 hours ago

CHP : Traffic Collision on US-101 Southbound at E Millbrae Ave (Millbrae). On Ramp affected. Expect delays.

San Mateo 1 day, 23 hours ago

CHP : Brush fire on US-101 Southbound south of I-280 S (san Francisco) (San Francisco). Off Ramp affected. Expect delays.

San Francisco 2 days, 13 hours ago

CHP : Traffic Collision on US-101 Southbound north of Marin - San Francisco County Line (San Francisco). Lane affected. Expect delays.

San Francisco 2 days, 15 hours ago

CHP : Traffic Hazard on US-101 Southbound north of Sir Francis Drake Blvd (Larkspur). Off Ramp affected. Expect delays.

Marin 3 days, 8 hours ago

CHP : Traffic Hazard on US-101 Southbound at Monterey Hwy (Gilroy). Right and center lanes affected. Expect delays.

Santa Clara 3 days, 16 hours ago

CHP : Traffic Hazard on US-101 Southbound exiting at Mckee Rd (San Jose). Off Ramp blocked. Expect delays.

Santa Clara 3 days, 17 hours ago

CHP : Traffic Hazard on US-101 Southbound exiting at E Capitol Expy (San Jose). Off Ramp affected. Expect delays.

Santa Clara 4 days, 11 hours ago

CHP : Traffic Collision with Injuries and Overturned vehicle on US-101 Southbound south of Monterey Hwy (Gilroy). Right lane blocked. Expect delays.

Santa Clara 4 days, 11 hours ago

CHP : Traffic Hazard on US-101 Southbound north of Rohnert Park Expy W (Rohnert Park). Lanes blocked. Expect delays.

Sonoma 4 days, 11 hours ago

CHP : Disabled vehicle on US-101 Southbound north of Golden Gate Bridge - Midspan (San Francisco). Lane blocked. Expect delays.

San Francisco 4 days, 13 hours ago

CHP : Traffic Hazard on US-101 Southbound south of Shiloh Rd (Windsor). Lanes affected. Expect delays.

Sonoma 4 days, 16 hours ago

CHP : Traffic Collision on US-101 Southbound entering at Mckee Rd (San Jose). On Ramp affected. Expect delays.

Santa Clara 4 days, 17 hours ago

CHP : Traffic Collision with Injuries on US-101 Southbound north of Mendocino Ave (Santa Rosa). Left and center lanes blocked. Expect delays.

Sonoma 4 days, 21 hours ago

CHP : Severe traffic alert and Traffic Collision with Injuries on US-101 Southbound north of Guadalupe Pky (San Jose). Left and center lanes blocked. Expect delays.

Santa Clara 5 days, 9 hours ago

CHP : Traffic Hazard on US-101 Southbound exiting at Grand Ave (South San Francisco). Off Ramp blocked. Expect delays.

San Mateo 5 days, 20 hours ago

CHP : Traffic Hazard on US-101 Southbound entering at 3RD St (San Rafael). On Ramp blocked. Expect delays.

Marin 5 days, 21 hours ago

CHP : Traffic Hazard on US-101 Southbound south of Hearn Ave (Santa Rosa). Left and center lanes blocked. Expect delays.

Sonoma 6 days, 17 hours ago

CHP : Traffic Hazard on US-101 Southbound entering at W Sierra Ave (Cotati). On Ramp blocked. Expect delays.

Sonoma 1 week, 1 day ago

CHP : Traffic Collision on US-101 Southbound north of Rohnert Park Expy W (Rohnert Park). Center lanes blocked. Expect delays.

Sonoma 1 week, 1 day ago

CHP : Traffic Collision with Injuries on US-101 Southbound north of Marin - San Francisco County Line (San Francisco). Lane blocked. Expect delays.

San Francisco 1 week, 1 day ago

CHP : Disabled vehicle on US-101 Southbound entering at Bernal Rd (San Jose). On Ramp affected. Expect delays.

Santa Clara 1 week, 2 days ago

CHP : Traffic Collision on US-101 Southbound south of Alum Rock Ave (San Jose). Off Ramp affected. Expect delays.

Santa Clara 1 week, 3 days ago

CHP : Traffic Hazard on US-101 Southbound south of Metcalf Rd (San Jose). Left lanes affected. Expect delays.

Santa Clara 1 week, 3 days ago

CHP : Disabled vehicle on US-101 Southbound at Monterey Hwy (Gilroy). Right and center lanes closed. Expect delays.

Santa Clara 1 week, 3 days ago

CHP : Traffic Hazard on US-101 Southbound north of Westside Rd (Healdsburg). Lanes affected. Expect delays.

Sonoma 1 week, 3 days ago

CHP : Traffic Hazard on US-101 Southbound north of San Antonio Rd (Unincorporated). Lanes affected. Expect delays.

Marin 1 week, 3 days ago

CHP : Traffic Hazard on US-101 Southbound exiting at Lucky Dr (Corte Madera). Off Ramp affected. Expect delays.

Marin 1 week, 3 days ago

CHP : Disabled vehicle on US-101 Southbound at Embarcadero Rd (Palo Alto). Off Ramp blocked. Expect delays.

Santa Clara 1 week, 4 days ago

CHP : Traffic Hazard on US-101 Southbound north of Windsor River Rd (Windsor). Lanes affected. Expect delays.

Sonoma 1 week, 4 days ago

CHP : Traffic Hazard on US-101 Southbound exiting at Tennant Ave (Morgan Hill). Off Ramp affected. Expect delays.

Santa Clara 1 week, 4 days ago

CHP : Traffic Hazard on US-101 Southbound at Golden Gate Bridge - Midspan (San Francisco). 2nd lane from the left blocked. Expect delays.

San Francisco 1 week, 4 days ago

CHP : Traffic Collision on US-101 Southbound at Masten Ave (Gilroy). Off Ramp affected. Expect delays.

Santa Clara 1 week, 5 days ago

CHP : Traffic Hazard on US-101 Southbound entering at Shiloh Rd (Windsor). On Ramp affected. Expect delays.

Sonoma 1 week, 6 days ago

CHP : Disabled vehicle on US-101 Southbound north of Lagoon Way (South San Francisco). Off Ramp affected. Expect delays.

San Mateo 2 weeks, 1 day ago

CHP : Fire on US-101 Southbound exiting at Cesar Chavez St (San Francisco). Off Ramp affected. Expect delays.

San Francisco 2 weeks, 2 days ago

CHP : Brush fire on US-101 Southbound south of N Cloverdale Blvd (Cloverdale). Off Ramp affected. Expect delays.

Sonoma 2 weeks, 2 days ago

CHP : Traffic Hazard on US-101 Southbound north of Mendocino Ave (Santa Rosa). Right and center lanes blocked. Expect delays.

Sonoma 2 weeks, 4 days ago

CHP : Disabled vehicle on US-101 Southbound entering at E 3RD Ave (San Mateo). On Ramp blocked. Expect delays.

San Mateo 2 weeks, 5 days ago

CHP : Traffic Collision with Injuries on US-101 Southbound north of Petaluma Blvd S (Petaluma). Lanes blocked. Expect delays.

Sonoma 2 weeks, 5 days ago

CHP : Traffic Hazard on US-101 Southbound south of Hearn Ave (Santa Rosa). Left lanes blocked. Expect delays.

Sonoma 2 weeks, 6 days ago

CHP : Traffic Hazard on US-101 Southbound exiting at Pacheco Pass Hwy (Gilroy). Off Ramp affected. Expect delays.

Santa Clara 2 weeks, 6 days ago

CHP : Spill on US-101 Southbound entering at Wilfred Ave (Rohnert Park). Center lanes affected. Expect delays.

Sonoma 2 weeks, 6 days ago

CHP : Traffic Hazard on US-101 Southbound south of Petaluma Blvd N (Petaluma). Center lanes affected. Expect delays.

Sonoma 2 weeks, 6 days ago

CHP : Traffic Hazard on US-101 Southbound north of Gravenstein Hwy (Cotati). Right lanes blocked. Expect delays.

Sonoma 3 weeks ago

CHP : Traffic Hazard on US-101 Southbound ramp to Pacheco Pass Hwy (Gilroy). On Ramp affected. Expect delays.

Santa Clara 3 weeks ago