CA · Highway

US-101 S Accidents & Crashes

US-101 S has recorded 956 traffic crashes in California since 2024, with no fatalities on record. In the last 24 hours, 19 new crashes were reported. The highest crash volumes are concentrated near Santa Clara and Sonoma.

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 May 28, 2026.

Breakdown by type: 653 accident, 264 construction.

917

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

16

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 917 results

653 accident 264 construction

CHP : Traffic Hazard on US-101 Southbound north of Cesar Chavez St (San Francisco). Lanes affected. Expect delays.

Moderate Accident

San Francisco 4 hours, 7 minutes ago

CHP : Residual delays on US-101 Southbound at University Ave (East Palo Alto). Right shoulder affected. Expect delays.

Moderate Accident

San Mateo 4 hours, 37 minutes ago

CHP : Disabled vehicle on US-101 Southbound north of Marin - San Francisco County Line (San Francisco). Lane blocked. Expect delays.

San Francisco 6 hours, 22 minutes ago

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

Moderate Accident

Santa Clara 6 hours, 37 minutes ago

Caltrans : Roadwork on US-101 Southbound entering at E 4TH Ave (San Mateo). On Ramp closed until 6 AM. From 10:00 PM Wednesday, May 27, 2026 to 6:00 AM Thursday, May 28, 2026.

San Mateo 7 hours, 7 minutes ago

Caltrans : Roadwork on US-101 Southbound entering at E 3RD Ave (San Mateo). On Ramp closed until 6 AM. From 9:00 PM Wednesday, May 27, 2026 to 6:00 AM Thursday, May 28, 2026.

San Mateo 7 hours, 7 minutes ago

Caltrans : Roadwork on US-101 Southbound between Bellam Blvd (San Rafael) and Madera Blvd (Corte Madera). Lanes closed until 6 AM. From 8:00 PM Wednesday, May 27, 2026 to 6:00 AM Thursday, May 28, 2026.

Marin 7 hours, 7 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, May 27, 2026 to 6:00 AM Thursday, May 28, 2026.

San Francisco 7 hours, 22 minutes ago

Caltrans : Roadwork on US-101 Southbound between Mansell St (San Francisco) and Beatty Rd (Brisbane). Lane closed until 6 AM. From 9:00 PM Wednesday, May 27, 2026 to 6:00 AM Thursday, May 28, 2026.

San Francisco 7 hours, 22 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, May 27, 2026 to 5:00 AM Thursday, May 28, 2026.

Santa Clara 8 hours, 7 minutes ago

Caltrans : Roadwork on US-101 Southbound between Lakeville St (Petaluma) and San Antonio Rd (Unincorporated). Right lane and shoulder closed until 5 AM. From 9:00 PM Wednesday, May 27, 2026 to 5:00 AM Thursday, May 28, 2026.

Sonoma 9 hours, 7 minutes ago

Caltrans : Roadwork on US-101 Southbound entering at Lakeville St (Petaluma). On Ramp closed until 5 AM. From 9:00 PM Wednesday, May 27, 2026 to 5:00 AM Thursday, May 28, 2026.

Sonoma 9 hours, 7 minutes ago

Caltrans : Roadwork on US-101 Southbound exiting at Lakeville St (Petaluma). Off Ramp closed until 5 AM. From 9:00 PM Wednesday, May 27, 2026 to 5:00 AM Thursday, May 28, 2026.

Sonoma 9 hours, 7 minutes ago

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

San Francisco 16 hours, 52 minutes ago

CHP : Traffic Collision on US-101 Southbound at Tully Rd (San Jose). Lane affected. Expect delays.

Moderate Accident

Santa Clara 17 hours, 22 minutes ago

CHP : Traffic Hazard on US-101 Southbound north of Lucky Dr (Corte Madera). 3rd lane from the left blocked. Expect delays.

Moderate Accident

Marin 19 hours, 7 minutes ago

CHP : Fire on US-101 Southbound entering at Cesar Chavez St (San Francisco). Right shoulder affected. Expect delays.

Moderate Accident

San Francisco 21 hours, 7 minutes ago

CHP : Traffic Collision on US-101 Southbound south of Rodeo Ave (Sausalito). Left lane blocked. Expect delays.

Moderate Accident

Marin 21 hours, 7 minutes ago

CHP : Disabled vehicle on US-101 Southbound south of I-80 W (San Francisco). Right lane blocked. Expect delays.

Moderate Accident

San Francisco 21 hours, 52 minutes ago

CHP : Traffic Collision on US-101 Southbound north of Whipple Ave (Redwood City). Left lanes blocked. Expect delays.

Moderate Accident

San Mateo 1 day, 3 hours ago

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

Moderate Accident

Marin 1 day, 4 hours ago

CHP : Residual delays on US-101 Southbound north of Lucas Valley Rd (San Rafael). All lanes open. Expect delays.

Marin 1 day, 5 hours ago

Caltrans : Roadwork on US-101 Southbound exiting at CA-12 W (Santa Rosa). Off Ramp closed until 5 AM. From 9:00 PM Tuesday, May 26, 2026 to 5:00 AM Wednesday, May 27, 2026.

Sonoma 1 day, 7 hours ago

Caltrans : Roadwork on US-101 Southbound entering at CA-12 W (Santa Rosa). On Ramp closed until 5 AM. From 9:00 PM Tuesday, May 26, 2026 to 5:00 AM Wednesday, May 27, 2026.

Sonoma 1 day, 7 hours ago

Caltrans : Roadwork on US-101 Southbound entering at College Ave (Santa Rosa). On Ramp closed until 5 AM. From 9:00 PM Tuesday, May 26, 2026 to 5:00 AM Wednesday, May 27, 2026.

Sonoma 1 day, 7 hours ago

Caltrans : Roadwork on US-101 Southbound exiting at College Ave (Santa Rosa). Off Ramp closed until 5 AM. From 9:00 PM Tuesday, May 26, 2026 to 5:00 AM Wednesday, May 27, 2026.

Sonoma 1 day, 7 hours ago

Caltrans : Roadwork on US-101 Southbound between Mendocino Ave (Santa Rosa) and 7TH St (Santa Rosa). Right lane and shoulder closed until 5 AM. From 9:00 PM Tuesday, May 26, 2026 to 5:00 AM Wednesday, May 27, 2026.

Sonoma 1 day, 7 hours ago

Caltrans : Roadwork on US-101 Southbound between Bellam Blvd (San Rafael) and Madera Blvd (Corte Madera). Lanes closed until 6 AM. From 8:00 PM Tuesday, May 26, 2026 to 6:00 AM Wednesday, May 27, 2026.

Marin 1 day, 10 hours ago

CHP : Traffic Hazard on US-101 Southbound north of S Airport Blvd (South San Francisco). Lane affected. Expect delays.

Moderate Accident

San Mateo 1 day, 18 hours ago

CHP : Traffic Hazard on US-101 Southbound north of San Benito County Line (Gilroy). Lanes blocked. Expect delays.

Santa Clara 1 day, 18 hours ago

CHP : Residual delays on US-101 Southbound south of CA-12 E (Santa Rosa). All lanes open. Expect delays.

Sonoma 1 day, 18 hours ago

CHP : Traffic Collision on US-101 Southbound at CA-92 E (San Mateo). Right lane blocked. Expect delays.

Moderate Accident

San Mateo 1 day, 19 hours ago

CHP : Traffic Collision on US-101 Southbound entering at E Hillsdale Blvd (San Mateo). On Ramp affected. Expect delays.

San Mateo 1 day, 19 hours ago

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

Moderate Accident

San Mateo 1 day, 20 hours ago

CHP : Traffic Hazard on US-101 Southbound south of Petaluma Blvd N (Petaluma). Lane blocked. Expect delays.

Moderate Accident

Sonoma 1 day, 20 hours ago

CHP : Vehicle fire on US-101 Southbound north of Yerba Buena Rd (San Jose). Right lane closed. Expect delays.

Moderate Accident

Santa Clara 1 day, 20 hours ago

CHP : Traffic Collision on US-101 Southbound south of Coyote Creek Golf Dr (San Jose). Lane affected. Expect delays.

Moderate Accident

Santa Clara 1 day, 21 hours ago

CHP : Fire on US-101 Southbound north of Mansell St (San Francisco). Lane affected. Expect delays.

Moderate Accident

San Francisco 1 day, 21 hours ago

CHP : Grass fire on US-101 Southbound at Tully Rd (San Jose). Off Ramp affected. Expect delays.

Santa Clara 1 day, 22 hours ago

CHP : Traffic Hazard on US-101 Southbound north of Lucas Valley Rd (San Rafael). 4th lane from the left blocked. Expect delays.

Moderate Accident

Marin 1 day, 22 hours ago

CHP : Traffic Hazard on US-101 Southbound north of I-380 W (South San Francisco). Right lane blocked. Expect delays.

Moderate Accident

San Mateo 2 days, 4 hours ago

CHP : Residual delays on US-101 Southbound north of I-580 W (San Rafael). Right shoulder affected. Expect delays.

Moderate Accident

Marin 2 days, 4 hours ago

CHP : Traffic Hazard on US-101 Southbound north of Ignacio Blvd (Novato). Left lanes blocked. Expect delays.

Moderate Accident

Marin 2 days, 6 hours ago

CHP : Traffic Collision with Injuries on US-101 Southbound north of Sister Cities Blvd (South San Francisco). Lanes blocked. Expect delays.

Moderate Accident

San Mateo 2 days, 10 hours ago

CHP : Disabled vehicle on US-101 Southbound at Wolfback Rdg (Sausalito). Left lane affected. Expect delays.

Moderate Accident

Marin 2 days, 12 hours ago

CHP : Traffic Hazard on US-101 Southbound north of Leavesley Rd (Gilroy). Right shoulder affected. Expect delays.

Moderate Accident

Santa Clara 2 days, 17 hours ago

CHP : Traffic Hazard on US-101 Southbound at Rowland Blvd (Novato). Lanes affected. Expect delays.

Moderate Accident

Marin 2 days, 19 hours ago

CHP : Disabled vehicle on US-101 Southbound north of San Marin Dr (Novato). Left lane blocked. Expect delays.

Moderate Accident

Marin 2 days, 19 hours ago

CHP : Disabled vehicle on US-101 Southbound north of I-280 S (san Jose) (San Jose). Right shoulder blocked. Expect delays.

Moderate Accident

Santa Clara 2 days, 20 hours ago

CHP : Traffic Collision on US-101 Southbound at W Sierra Ave (Cotati). Lane affected. Expect delays.

Moderate Accident

Sonoma 2 days, 20 hours ago