CA · Highway

US-101 S Accidents & Crashes

US-101 S has recorded 3,504 traffic crashes in California since 2024, with no fatalities on record. In the last 24 hours, 18 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. 29, 2026.

Breakdown by type: 2,499 accident, 875 construction, 1 other.

3,375

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

17

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 3,375 results

2499 accident 875 construction 1 other

CHP : Traffic Hazard on US-101 Southbound north of CA-85 S (san Jose) (San Jose). Right lane blocked. Expect delays.

Moderate Accident

Santa Clara 4 hours, 20 minutes ago

CHP : Traffic Collision on US-101 Southbound south of Ignacio Blvd (Novato). Lane affected. Expect delays.

Moderate Accident

Marin 5 hours, 20 minutes ago

CHP : Traffic Hazard on US-101 Southbound north of N Shoreline Blvd (Mountain View). Right lane blocked. Expect delays.

Moderate Accident

Santa Clara 5 hours, 50 minutes ago

CHP : Disabled vehicle on US-101 Southbound north of N San Pedro Rd (San Rafael). Left lane blocked. Expect delays.

Moderate Accident

Marin 6 hours, 5 minutes ago

CHP : Traffic Hazard on US-101 Southbound north of Airport Exit (Millbrae). Lane affected. Expect delays.

Moderate Accident

San Mateo 8 hours, 20 minutes ago

Caltrans : Roadwork on US-101 Southbound entering at CA-92 W (San Mateo). On Ramp closed until 6 AM. From 7:00 PM Wednesday, October 28, 2026 to 6:00 AM Thursday, October 29, 2026.

San Mateo 8 hours, 50 minutes ago

Caltrans : Roadwork on US-101 Southbound exiting at Brittan Ave (San Carlos). Off Ramp closed until 6 AM. From 10:00 PM Wednesday, October 28, 2026 to 6:00 AM Thursday, October 29, 2026.

San Mateo 9 hours, 20 minutes ago

Caltrans : Roadwork on US-101 Southbound between I-80 W (San Francisco) and Cesar Chavez St (San Francisco). Lane closed until 6 AM. From 10:00 PM Wednesday, October 28, 2026 to 6:00 AM Thursday, October 29, 2026.

San Francisco 9 hours, 20 minutes ago

Caltrans : Roadwork on US-101 Southbound at San Antonio Rd (Unincorporated). Right lane and shoulder closed until 5 AM. From 9:00 PM Wednesday, October 28, 2026 to 5:00 AM Thursday, October 29, 2026.

Marin 9 hours, 35 minutes ago

Caltrans : Roadwork on US-101 Southbound exiting at San Antonio Rd (Unincorporated). Off Ramp closed until 5 AM. From 9:00 PM Wednesday, October 28, 2026 to 5:00 AM Thursday, October 29, 2026.

Marin 9 hours, 35 minutes ago

Caltrans : Bridge work on US-101 Southbound between Wolfback Rdg (Sausalito) and Golden Gate Bridge - Toll Plaza (San Francisco). Lanes closed until 5 AM. From 8:00 PM Wednesday, October 28, 2026 to 5:00 AM Thursday, October 29, 2026.

Marin 9 hours, 50 minutes ago

Caltrans : Roadwork on US-101 Southbound between CA-85 S (san Jose) (San Jose) and Metcalf Rd (San Jose). Various lanes closed until 5 AM. From 8:00 PM Wednesday, October 28, 2026 to 5:00 AM Thursday, October 29, 2026.

Santa Clara 10 hours, 35 minutes ago

CHP : Traffic Collision on US-101 Southbound south of I-880 N (San Jose). Lane affected. Expect delays.

Moderate Accident

Santa Clara 18 hours, 35 minutes ago

CHP : Residual delays on US-101 Southbound north of Miller Creek Rd (Unincorporated). All lanes open. Expect delays.

Marin 18 hours, 50 minutes ago

CHP : Brush fire on US-101 Southbound entering at Rohnert Park Expy W (Rohnert Park). Right shoulder affected. Expect delays.

Moderate Accident

Sonoma 20 hours, 50 minutes ago

CHP : Residual delays on US-101 Southbound north of River Rd (Unincorporated). All lanes open. Expect delays.

Sonoma 21 hours, 5 minutes ago

CHP : Disabled vehicle on US-101 Southbound north of San Antonio Ave (Mountain View). Lane blocked. Expect delays.

Moderate Accident

Santa Clara 21 hours, 20 minutes ago

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

Marin 21 hours, 20 minutes ago

CHP : Flooding and Disabled vehicle on US-101 Southbound south of CA-1 N (Sausalito). Lane blocked. Expect delays.

Moderate Accident

Marin 1 day, 1 hour ago

CHP : Disabled vehicle on US-101 Southbound entering at Airport Exit (Millbrae). Left lane blocked. Expect delays.

Moderate Accident

San Mateo 1 day, 3 hours ago

CHP : Traffic Hazard on US-101 Southbound north of Beatty Rd (Brisbane). Lane affected. Expect delays.

Moderate Accident

San Mateo 1 day, 3 hours ago

CHP : Traffic Hazard on US-101 Southbound north of Guadalupe Pky (San Jose). Lanes blocked. Expect delays.

Moderate Accident

Santa Clara 1 day, 3 hours ago

CHP : Traffic Collision on US-101 Southbound exiting at E Poplar Ave (San Mateo). Left lanes blocked. Expect delays.

Moderate Accident

San Mateo 1 day, 3 hours ago

CHP : Disabled vehicle on US-101 Southbound north of Yerba Buena Rd (San Jose). Lane affected. Expect delays.

Moderate Accident

Santa Clara 1 day, 5 hours ago

CHP : Fire on US-101 Southbound exiting at Blossom Hill Rd (San Jose). Right shoulder affected. Expect delays.

Moderate Accident

Santa Clara 1 day, 6 hours ago

CHP : Traffic Collision on US-101 Southbound south of Cesar Chavez St (San Francisco). Lane affected. Expect delays.

Moderate Accident

San Francisco 1 day, 6 hours ago

CHP : Residual delays on US-101 Southbound south of San Marin Dr (Novato). All lanes open. Expect delays.

Marin 1 day, 6 hours ago

CHP : Traffic Collision on US-101 Southbound at Lakeville St (Petaluma). Lane affected. Expect delays.

Moderate Accident

Sonoma 1 day, 7 hours ago

CHP : Traffic Hazard on US-101 Southbound south of Mendocino Ave (Santa Rosa). Lanes affected. Expect delays.

Sonoma 1 day, 7 hours ago

CHP : Traffic Hazard on US-101 Southbound north of Airport Pky (San Jose). Lane affected. Expect delays.

Moderate Accident

Santa Clara 1 day, 7 hours ago

CHP : Fire on US-101 Southbound at Pacheco Pass Hwy (Gilroy). Lane affected. Expect delays.

Moderate Accident

Santa Clara 1 day, 8 hours ago

Caltrans : Roadwork on US-101 Southbound exiting at San Antonio Rd (Unincorporated). Off Ramp closed until 5 AM. From 9:00 PM Tuesday, October 27, 2026 to 5:00 AM Wednesday, October 28, 2026.

Marin 1 day, 9 hours ago

Caltrans : Roadwork on US-101 Southbound at San Antonio Rd (Unincorporated). Right lane and shoulder closed until 5 AM. From 9:00 PM Tuesday, October 27, 2026 to 5:00 AM Wednesday, October 28, 2026.

Marin 1 day, 9 hours ago

Caltrans : Roadwork on US-101 Southbound between Manuel t Freitas Pky (San Rafael) and Lincoln Ave (San Rafael). Lanes closed until 5 AM. From 9:00 PM Tuesday, October 27, 2026 to 5:00 AM Wednesday, October 28, 2026.

Marin 1 day, 11 hours ago

Caltrans : Roadwork on US-101 Southbound entering at Lincoln Ave (San Rafael). On Ramp closed until 7 AM. From 12:00 AM Wednesday, October 28, 2026 to 7:00 AM Wednesday, October 28, 2026.

Marin 1 day, 11 hours ago

Caltrans : Roadwork on US-101 Southbound exiting at 3RD St (San Rafael). Off Ramp closed until 6 AM. From 12:00 AM Wednesday, October 28, 2026 to 6:00 AM Wednesday, October 28, 2026.

Marin 1 day, 11 hours ago

Caltrans : Roadwork on US-101 Southbound between I-80 W (San Francisco) and Cesar Chavez St (San Francisco). Lane closed until 6 AM. From 10:00 PM Tuesday, October 27, 2026 to 6:00 AM Wednesday, October 28, 2026.

San Francisco 1 day, 11 hours ago

CHP : Traffic Collision on US-101 Southbound at Pacheco Pass Hwy (Gilroy). Right shoulder affected. Expect delays.

Moderate Accident

Santa Clara 1 day, 12 hours ago

Caltrans : Roadwork on US-101 Southbound between CA-85 S (san Jose) (San Jose) and Metcalf Rd (San Jose). Various lanes closed until 5 AM. From 8:00 PM Tuesday, October 27, 2026 to 5:00 AM Wednesday, October 28, 2026.

Santa Clara 1 day, 13 hours ago

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

Marin 1 day, 15 hours ago

Caltrans : Bridge work on US-101 Southbound between Wolfback Rdg (Sausalito) and Golden Gate Bridge - Toll Plaza (San Francisco). Lanes closed until 5 AM. From 8:00 PM Tuesday, October 27, 2026 to 5:00 AM Wednesday, October 28, 2026.

Marin 1 day, 16 hours ago

CHP : Traffic Collision on US-101 Southbound north of Monterey Hwy (Gilroy). Left lane blocked. Expect delays.

Moderate Accident

Santa Clara 1 day, 20 hours ago

CHP : Residual delays on US-101 Southbound north of Todd Rd (Santa Rosa). Right shoulder affected. Expect delays.

Moderate Accident

Sonoma 1 day, 20 hours ago

CHP : Traffic Collision with Injuries on US-101 Southbound south of College Ave (Santa Rosa). Right lane blocked. Expect delays.

Moderate Accident

Sonoma 1 day, 21 hours ago

CHP : Traffic Collision with Injuries on US-101 Southbound north of CA-12 W (Santa Rosa). Right lane blocked. Expect delays.

Moderate Accident

Sonoma 1 day, 21 hours ago

CHP : Traffic Hazard on US-101 Southbound north of Donahue St (Sausalito). Right lane affected. Expect delays.

Moderate Accident

Marin 1 day, 22 hours ago

Caltrans : Roadwork on US-101 Southbound between I-880 S (San Jose) and Bernal Rd (San Jose). Lane closed until 2-30 PM. From 9:30 AM Tuesday, October 27, 2026 to 2:30 PM Tuesday, October 27, 2026.

Santa Clara 2 days, 1 hour ago

CHP : Traffic Hazard on US-101 Southbound north of Petaluma Blvd S (Petaluma). Right lane affected. Expect delays.

Moderate Accident

Sonoma 2 days, 1 hour ago

CHP : Traffic Hazard on US-101 Southbound exiting at Steele Ln (Santa Rosa). Lane affected. Expect delays.

Moderate Accident

Sonoma 2 days, 2 hours ago

CHP : Traffic Collision with Injuries on US-101 Southbound south of Whipple Ave (Redwood City). Right and center lanes blocked. Expect delays.

Moderate Accident

San Mateo 2 days, 2 hours ago