CA · Highway

CA-1 S Accidents & Crashes

CA-1 S has recorded 366 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 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 31, 2026.

Breakdown by type: 264 construction, 102 accident.

366

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

2

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 366 results

264 construction 102 accident

CHP : Severe traffic alert and Fire on CA-1 Northbound and Southbound south of Stewarts Point Skaggs Springs Rd (Unincorporated). All lanes blocked. Avoid the area.

Sonoma 5 minutes ago Live

Caltrans : Roadwork on CA-1 Southbound at Swanton Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Friday, July 31, 2026 to 5:00 PM Friday, July 31, 2026.

San Mateo 20 minutes 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 Thursday, July 30, 2026 to 5:00 PM Thursday, July 30, 2026.

San Mateo 14 hours, 50 minutes ago

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

Moderate Accident

Santa Cruz 22 hours, 20 minutes 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 29, 2026 to 7:00 AM Thursday, July 30, 2026.

San Mateo 1 day, 1 hour ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 7 AM. From 7:00 PM Wednesday, July 29, 2026 to 7:00 AM Thursday, July 30, 2026.

San Mateo 1 day, 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 Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026.

San Mateo 1 day, 2 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 29, 2026 to 6:00 AM Thursday, July 30, 2026.

San Mateo 1 day, 2 hours ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026.

San Mateo 1 day, 2 hours ago

Caltrans : Emergency construction on CA-1 Southbound between US-101 S (san Francisco) (San Francisco) and Geary Blvd (San Francisco). Various lanes closed until 6 AM. From 9:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026.

San Francisco 1 day, 3 hours ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 6 AM. From 10:00 PM Wednesday, July 29, 2026 to 6:00 AM Thursday, July 30, 2026.

San Mateo 1 day, 3 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 Wednesday, July 29, 2026 to 5:00 PM Wednesday, July 29, 2026.

San Mateo 1 day, 14 hours ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 7 AM. From 7:00 PM Tuesday, July 28, 2026 to 7:00 AM Wednesday, July 29, 2026.

San Mateo 2 days, 1 hour ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 7 AM. From 6:00 PM Tuesday, July 28, 2026 to 7:00 AM Wednesday, July 29, 2026.

San Mateo 2 days, 1 hour ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Tuesday, July 28, 2026 to 6:00 AM Wednesday, July 29, 2026.

San Mateo 2 days, 2 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 28, 2026 to 6:00 AM Wednesday, July 29, 2026.

San Mateo 2 days, 2 hours ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 6 AM. From 10:00 PM Tuesday, July 28, 2026 to 6:00 AM Wednesday, July 29, 2026.

San Mateo 2 days, 2 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 28, 2026 to 6:00 AM Wednesday, July 29, 2026.

San Mateo 2 days, 2 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 28, 2026 to 6:00 AM Wednesday, July 29, 2026.

San Mateo 2 days, 2 hours ago

Caltrans : Roadwork on CA-1 Southbound at Bonny Doon Rd (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Tuesday, July 28, 2026 to 5:00 PM Tuesday, July 28, 2026.

San Mateo 2 days, 15 hours ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 7 AM. From 6:00 PM Monday, July 27, 2026 to 7:00 AM Tuesday, July 28, 2026.

San Mateo 3 days, 1 hour ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 7 AM. From 7:00 PM Monday, July 27, 2026 to 7:00 AM Tuesday, July 28, 2026.

San Mateo 3 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 27, 2026 to 6:00 AM Tuesday, July 28, 2026.

San Mateo 3 days, 3 hours 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 27, 2026 to 6:00 AM Tuesday, July 28, 2026.

San Mateo 3 days, 3 hours ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 6 AM. From 10:00 PM Monday, July 27, 2026 to 6:00 AM Tuesday, July 28, 2026.

San Mateo 3 days, 3 hours ago

Caltrans : Roadwork on CA-1 Southbound at Capistrano Rd (El Granada). Lane closed until 6 AM. From 10:00 PM Monday, July 27, 2026 to 6:00 AM Tuesday, July 28, 2026.

San Mateo 3 days, 3 hours ago

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 3 days, 22 hours ago

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

Moderate Accident

San Mateo 4 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 Friday, July 24, 2026 to 6:00 AM Saturday, July 25, 2026.

San Mateo 6 days, 4 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 6 days, 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 6 days, 5 hours ago

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

Sonoma 6 days, 12 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 6 days, 18 hours 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 1 week 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 1 week 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 1 week 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 1 week 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 1 week 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 1 week 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 1 week 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 1 week 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 1 week, 1 day 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 1 week, 1 day 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 1 week, 1 day ago

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

San Mateo 1 week, 1 day 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 1 week, 1 day 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 1 week, 2 days ago

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

San Mateo 1 week, 2 days 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 1 week, 2 days ago

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

Moderate Accident

Sonoma 1 week, 2 days ago