CA · Highway

CA-1 S Accidents & Crashes

CA-1 S has recorded 340 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 Santa Cruz.

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 July 27, 2026.

Breakdown by type: 240 construction, 100 accident.

340

Total Crashes

All time records

0

Fatalities

Fatal injury reports

1

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

240 construction 100 accident

Caltrans : Roadwork on CA-1 Southbound at Swanton Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Monday, July 27, 2026 to 5:00 PM Monday, July 27, 2026.

San Mateo 5 hours, 6 minutes ago

CHP : Brush fire on CA-1 Southbound north of Alemany Blvd (Daly City). Right shoulder affected. Expect delays.

Moderate Accident

San Mateo 1 day, 5 hours ago

Caltrans : Roadwork on CA-1 Southbound at CA-92 E (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Friday, July 24, 2026 to 6:00 AM Saturday, July 25, 2026.

San Mateo 2 days, 11 hours ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 7 AM. From 7:00 PM Friday, July 24, 2026 to 7:00 AM Saturday, July 25, 2026.

San Mateo 2 days, 12 hours ago

Caltrans : Roadwork on CA-1 Southbound at CA-92 E (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Friday, July 24, 2026 to 6:00 AM Saturday, July 25, 2026.

San Mateo 2 days, 12 hours ago

CHP : Traffic Collision with Injuries on CA-1 Southbound at Valley Ford Rd (Valley Ford). Lanes blocked. Expect delays.

Sonoma 2 days, 18 hours ago

Caltrans : Roadwork on CA-1 Northbound and Southbound at Swanton Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Friday, July 24, 2026 to 5:00 PM Friday, July 24, 2026.

San Mateo 3 days, 1 hour ago

Caltrans : Roadwork on CA-1 Southbound at Swanton Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Friday, July 24, 2026 to 5:00 PM Friday, July 24, 2026.

San Mateo 3 days, 7 hours ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 7 AM. From 6:00 PM Thursday, July 23, 2026 to 7:00 AM Friday, July 24, 2026.

San Mateo 3 days, 8 hours ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 7 AM. From 7:00 PM Thursday, July 23, 2026 to 7:00 AM Friday, July 24, 2026.

San Mateo 3 days, 8 hours ago

Caltrans : Roadwork on CA-1 Southbound at CA-92 E (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Thursday, July 23, 2026 to 6:00 AM Friday, July 24, 2026.

San Mateo 3 days, 9 hours ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 6 AM. From 10:00 PM Thursday, July 23, 2026 to 6:00 AM Friday, July 24, 2026.

San Mateo 3 days, 9 hours ago

Caltrans : Roadwork on CA-1 Southbound at CA-92 E (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Thursday, July 23, 2026 to 6:00 AM Friday, July 24, 2026.

San Mateo 3 days, 9 hours ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Thursday, July 23, 2026 to 6:00 AM Friday, July 24, 2026.

San Mateo 3 days, 9 hours ago

Caltrans : Roadwork on CA-1 Northbound and Southbound at Stewarts Point Skaggs Springs Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:30 AM Thursday, July 23, 2026 to 4:30 PM Thursday, July 23, 2026.

Sonoma 3 days, 22 hours ago

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

San Mateo 4 days, 8 hours ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 7 AM. From 7:00 PM Wednesday, July 22, 2026 to 7:00 AM Thursday, July 23, 2026.

San Mateo 4 days, 8 hours ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 7 AM. From 6:00 PM Wednesday, July 22, 2026 to 7:00 AM Thursday, July 23, 2026.

San Mateo 4 days, 8 hours ago

CHP : Fire on CA-1 Southbound ramp to Skyline Blvd (Daly City). Lanes affected. Expect delays.

San Mateo 4 days, 21 hours ago

Caltrans : Roadwork on CA-1 Southbound at Stewarts Point Skaggs Springs Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:30 AM Wednesday, July 22, 2026 to 4:30 PM Wednesday, July 22, 2026.

Sonoma 5 days, 4 hours ago

Caltrans : Roadwork on CA-1 Southbound at CA-92 E (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Tuesday, July 21, 2026 to 6:00 AM Wednesday, July 22, 2026.

San Mateo 5 days, 9 hours ago

CHP : Vehicle fire on CA-1 Southbound north of Old Devil's Slide Hwy (Pacifica). Right shoulder affected. Expect delays.

San Mateo 5 days, 21 hours ago

Caltrans : Roadwork on CA-1 Southbound at Stewarts Point Skaggs Springs Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:30 AM Tuesday, July 21, 2026 to 4:30 PM Tuesday, July 21, 2026.

Sonoma 5 days, 22 hours ago

CHP : Traffic Hazard on CA-1 Southbound north of Bodega Hwy (Bodega). Lane blocked. Expect delays.

Moderate Accident

Sonoma 6 days, 1 hour ago

Caltrans : Roadwork on CA-1 Southbound at CA-92 E (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Monday, July 20, 2026 to 6:00 AM Tuesday, July 21, 2026.

San Mateo 6 days, 8 hours ago

CHP : Traffic Collision with Injuries on CA-1 Southbound at CA-17 N (Santa Cruz). On Ramp affected. Expect delays.

Santa Cruz 6 days, 14 hours ago

Caltrans : Roadwork on CA-1 Northbound and Southbound at Bonny Doon Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Monday, July 20, 2026 to 5:00 PM Monday, July 20, 2026.

San Mateo 6 days, 23 hours ago

Caltrans : Roadwork on CA-1 Southbound at Stewarts Point Skaggs Springs Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:30 AM Monday, July 20, 2026 to 4:30 PM Monday, July 20, 2026.

Sonoma 1 week ago

Caltrans : Roadwork on CA-1 Southbound at Point Reyes-petaluma Rd (Point Reyes Station). Lane closed. One way traffic control in effect. From 7:00 AM Monday, July 20, 2026 to 5:00 PM Monday, July 20, 2026.

Marin 1 week ago

Caltrans : Roadwork on CA-1 Southbound at Sir Francis Drake Blvd (Olema). Lane closed. One way traffic control in effect. From 7:00 AM Monday, July 20, 2026 to 9:00 AM Monday, July 20, 2026.

Marin 1 week ago

CHP : Traffic Hazard on CA-1 Southbound south of CA-17 N (Santa Cruz). Right shoulder affected. Expect delays.

Moderate Accident

Santa Cruz 1 week ago

Caltrans : Roadwork on CA-1 Eastbound and Westbound at Fairfax - Bolinas Rd (Bolinas). Lane closed. One way traffic control in effect. From 9:15 AM Friday, July 17, 2026 to 5:15 PM Friday, July 17, 2026.

Santa Cruz 1 week, 2 days ago

Caltrans : Roadwork on CA-1 Southbound at Bonny Doon Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Friday, July 17, 2026 to 5:00 PM Friday, July 17, 2026.

San Mateo 1 week, 2 days ago

Caltrans : Bridge work on CA-1 Southbound at Skyline Blvd (Daly City). Lane closed until 4 PM. From 10:00 AM Friday, July 17, 2026 to 4:00 PM Friday, July 17, 2026.

San Mateo 1 week, 2 days ago

Caltrans : Roadwork on CA-1 Northbound and Southbound at Bonny Doon Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Thursday, July 16, 2026 to 5:00 PM Thursday, July 16, 2026.

San Mateo 1 week, 3 days ago

Caltrans : Roadwork on CA-1 Southbound at Sir Francis Drake Blvd (Olema). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, July 15, 2026 to 5:00 PM Wednesday, July 15, 2026.

Marin 1 week, 4 days ago

Caltrans : Bridge work on CA-1 Southbound at Skyline Blvd (Daly City). Lane closed until 4 PM. From 10:00 AM Wednesday, July 15, 2026 to 4:00 PM Wednesday, July 15, 2026.

San Mateo 1 week, 4 days ago

Caltrans : Roadwork on CA-1 Southbound at Bonny Doon Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, July 15, 2026 to 5:00 PM Wednesday, July 15, 2026.

San Mateo 1 week, 5 days ago

CHP : Brush fire on CA-1 Southbound at Swanton Rd (Unincorporated). Lane affected. Expect delays.

San Mateo 1 week, 6 days ago

CHP : Traffic Hazard on CA-1 Southbound at Gravenstein Hwy (Valley Ford). Lane affected. Expect delays.

Sonoma 1 week, 6 days ago

Caltrans : Roadwork on CA-1 Northbound and Southbound at Gravenstein Hwy (Valley Ford). Lane closed. One way traffic control in effect. From 9:00 AM Monday, July 13, 2026 to 3:00 PM Monday, July 13, 2026.

Sonoma 1 week, 6 days ago

CHP : Residual delays on CA-1 Southbound north of Geary Blvd (San Francisco). Right shoulder affected. Expect delays.

Moderate Accident

San Francisco 2 weeks ago

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

Santa Cruz 2 weeks, 1 day ago

CHP : Severe traffic alert and Traffic Collision with Injuries on CA-1 Southbound north of Bodega Hwy (Bodega). All lanes blocked. Avoid the area.

Sonoma 2 weeks, 1 day ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 8 AM. From 6:00 PM Friday, July 10, 2026 to 8:00 AM Saturday, July 11, 2026.

San Mateo 2 weeks, 2 days ago

Caltrans : Roadwork on CA-1 Southbound between Fulton St (San Francisco) and Sloat Blvd (San Francisco). Lanes closed until 5 AM. From 9:00 PM Friday, July 10, 2026 to 5:00 AM Saturday, July 11, 2026.

San Francisco 2 weeks, 2 days ago

Caltrans : Roadwork on CA-1 Southbound at CA-92 E (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Friday, July 10, 2026 to 6:00 AM Saturday, July 11, 2026.

San Mateo 2 weeks, 2 days ago

Caltrans : Roadwork on CA-1 Southbound north of Marshall-petaluma Rd (Marshall). Lane closed. Expect delays. From 8:15 AM Friday, July 10, 2026 to 4:00 PM Friday, July 10, 2026.

Marin 2 weeks, 2 days ago

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Friday, July 10, 2026 to 5:00 PM Friday, July 10, 2026.

San Mateo 2 weeks, 2 days ago

Caltrans : Roadwork on CA-1 Southbound at Bonny Doon Rd (Unincorporated). Right shoulder closed until 4 PM. From 7:00 AM Friday, July 10, 2026 to 4:00 PM Friday, July 10, 2026.

San Mateo 2 weeks, 3 days ago