CA · Highway

CA-1 S Accidents & Crashes

CA-1 S has recorded 47 traffic crashes in California since 2024, with no fatalities on record. In the last 24 hours, 3 new crashes 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.

Breakdown by type: 9 construction, 8 accident.

17
Total Crashes
Filtered results
0
Fatalities
Fatal injury reports
3
Today
Reported since midnight

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

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Crash Records

CA-1 S Incidents 17 results

9 construction 8 accident
Caltrans : Emergency construction on CA-1 Northbound and Southbound at Santa Cruz County Line (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, April 22, 2026 to 6:00 PM Wednesday, April 22, 2026.
Construction
San Mateo 9 minutes ago Live
Caltrans : Roadwork on CA-1 Northbound and Southbound at Capistrano Rd (El Granada). Lane closed. One way traffic control in effect. From 9:00 AM Wednesday, April 22, 2026 to 3:00 PM Wednesday, April 22, 2026.
Construction
San Mateo 9 minutes ago Live
Caltrans : Roadwork on CA-1 Northbound and Southbound at Marshall-petaluma Rd (Marshall). Lane closed. One way traffic control in effect. From 9:00 AM Wednesday, April 22, 2026 to 3:00 PM Wednesday, April 22, 2026.
Construction
Marin 9 minutes ago Live
Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed. One way traffic control in effect. From 9:00 AM Tuesday, April 21, 2026 to 3:00 PM Tuesday, April 21, 2026.
Construction
San Mateo 20 hours, 9 minutes ago
CHP : Traffic Collision on CA-1 Southbound north of CA-17 N (Santa Cruz). On Ramp affected. Expect delays.
High Accident
Santa Cruz 1 day, 11 hours ago
CHP : Flooding on CA-1 Southbound north of Monterey Rd (Pacifica). Lanes affected. Expect delays.
High Accident
San Mateo 1 day, 15 hours ago
CHP : Residual delays on CA-1 Southbound at Almonte Blvd (Unincorporated). All lanes open. Expect delays.
Accident
Marin 1 day, 16 hours ago
Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed. One way traffic control in effect. From 9:00 AM Monday, April 20, 2026 to 3:00 PM Monday, April 20, 2026.
Construction
San Mateo 1 day, 20 hours ago
Caltrans : Roadwork on CA-1 Southbound at Bay St (Unincorporated). Lane closed until 3 PM. From 9:00 AM Monday, April 20, 2026 to 3:00 PM Monday, April 20, 2026.
Construction
San Mateo 1 day, 20 hours ago
CHP : Traffic Collision with Injuries on CA-1 Southbound north of Sharp Park Rd (Pacifica). Lane affected. Expect delays.
Moderate Accident
San Mateo 1 day, 20 hours ago
Caltrans : Roadwork on CA-1 Southbound at Sir Francis Drake Blvd (Olema). Lane closed. One way traffic control in effect. From 9:00 AM Monday, April 20, 2026 to 3:00 PM Monday, April 20, 2026.
Construction
Marin 1 day, 22 hours ago
CHP : Traffic Hazard on CA-1 Southbound ramp to Skyline Blvd (Daly City). Left lane affected. Expect delays.
Moderate Accident
San Mateo 2 days, 2 hours ago
CHP : Traffic Collision with Injuries on CA-1 Southbound north of Stewarts Point Skaggs Springs Rd (Unincorporated). All lanes blocked. Avoid the area.
High Accident
Sonoma 4 days, 14 hours ago
Caltrans : Emergency construction on CA-1 Northbound and Southbound at Santa Cruz County Line (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Friday, April 17, 2026 to 6:00 PM Friday, April 17, 2026.
Construction
San Mateo 4 days, 17 hours ago
CHP : Traffic Hazard on CA-1 Southbound north of CA-17 S (Santa Cruz). Lanes affected. Expect delays.
High Accident
Santa Cruz 5 days, 2 hours ago
Caltrans : Emergency construction on CA-1 Northbound and Southbound at Santa Cruz County Line (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Thursday, April 16, 2026 to 6:00 PM Thursday, April 16, 2026.
Construction
San Mateo 5 days, 19 hours ago
CHP : Traffic Hazard on CA-1 Southbound north of CA-17 N (Santa Cruz). 2nd lane from the left affected. Expect delays.
Moderate Accident
Santa Cruz 6 days, 3 hours ago