CA · Highway

CA-1 S Accidents & Crashes

CA-1 S has recorded 642 traffic crashes in California since 2024, with no fatalities on record. In the last 24 hours, 1 new crash were reported. The highest crash volumes are concentrated near San Mateo 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: 9 accident, 5 construction.

14

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

0

Today

Reported since midnight

Today's Accidents Today's Fatalities

Crash locations on CA-1 S. Click a marker to view details.

Crash Records

CA-1 S Incidents 14 results

9 accident 5 construction

Caltrans : Emergency construction on CA-1 Southbound at Santa Cruz County Line (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Tuesday, October 27, 2026 to 4:00 PM Tuesday, October 27, 2026.

San Mateo 5 hours, 59 minutes ago

Caltrans : Emergency construction on CA-1 Southbound at Santa Cruz County Line (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Monday, October 26, 2026 to 4:00 PM Monday, October 26, 2026.

San Mateo 1 day, 6 hours ago

CHP : Residual delays on CA-1 Southbound at CA-17 N (Santa Cruz). Right shoulder affected. Expect delays.

Moderate Accident

Santa Cruz 1 day, 12 hours ago

CHP : Residual delays on CA-1 Northbound and Southbound south of Muir Woods Rd (Unincorporated). All lanes open. Expect delays.

Marin 1 day, 22 hours ago

CHP : Traffic Collision on CA-1 Southbound north of 1st St (Montara). Lane blocked. Expect delays.

San Mateo 3 days ago

CHP : Traffic Hazard on CA-1 Southbound north of CA-17 N (Santa Cruz). Left lane affected. Expect delays.

Moderate Accident

Santa Cruz 3 days, 5 hours ago

Caltrans : Roadwork on CA-1 Southbound between Fulton St (San Francisco) and Brotherhood Way (San Francisco). Lane closed until 5 AM. From 9:00 PM Friday, October 23, 2026 to 5:00 AM Saturday, October 24, 2026.

San Francisco 3 days, 14 hours ago

CHP : Disabled vehicle on CA-1 Southbound at CA-17 N (Santa Cruz). Lane affected. Expect delays.

Moderate Accident

Santa Cruz 3 days, 22 hours ago

CHP : Traffic Hazard on CA-1 Southbound north of Serramonte Blvd (Daly City). Lane affected. Expect delays.

Moderate Accident

San Mateo 4 days, 1 hour ago

Caltrans : Roadwork on CA-1 Southbound at CA-92 E (Half Moon Bay). Lanes closed until 6 AM. From 10:00 PM Thursday, October 22, 2026 to 6:00 AM Friday, October 23, 2026.

San Mateo 4 days, 16 hours ago

CHP : Disabled vehicle on CA-1 Southbound north of Geary Blvd (San Francisco). Left lane blocked. Expect delays.

Moderate Accident

San Francisco 4 days, 19 hours ago

CHP : Traffic Collision on CA-1 Southbound at Paloma Ave (Pacifica). Lane affected. Expect delays.

Moderate Accident

San Mateo 4 days, 20 hours ago

Caltrans : Emergency construction on CA-1 Southbound at Santa Cruz County Line (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, October 21, 2026 to 4:00 PM Wednesday, October 21, 2026.

San Mateo 6 days, 1 hour ago

CHP : Traffic Hazard on CA-1 Southbound north of Serramonte Blvd (Daly City). 3rd lane from the left blocked. Expect delays.

Moderate Accident

San Mateo 6 days, 23 hours ago