CA · Highway

CA-1 S Accidents & Crashes

CA-1 S has recorded 200 traffic crashes in California since 2024, with no fatalities on record. In the last 24 hours, 2 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 June 9, 2026.

Breakdown by type: 20 construction, 2 accident.

22

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 22 results

20 construction 2 accident

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Tuesday, June 09, 2026 to 5:00 PM Tuesday, June 09, 2026.

San Mateo 12 hours, 52 minutes ago

Caltrans : Roadwork on CA-1 Southbound at Valley Ford Rd (Valley Ford). Lane closed. One way traffic control in effect. From 9:00 AM Tuesday, June 09, 2026 to 3:00 PM Tuesday, June 09, 2026.

Marin 13 hours, 52 minutes ago

Caltrans : Roadwork on CA-1 Southbound at Valley Ford Rd (Valley Ford). Lane closed. One way traffic control in effect. From 9:00 AM Monday, June 08, 2026 to 3:00 PM Monday, June 08, 2026.

Marin 1 day, 13 hours ago

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Monday, June 08, 2026 to 5:00 PM Monday, June 08, 2026.

San Mateo 1 day, 14 hours ago

CHP : Traffic Collision on CA-1 Southbound at US-101 N (Sausalito). Lane affected. Expect delays.

Moderate Accident

Marin 2 days, 18 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, June 05, 2026 to 6:00 AM Saturday, June 06, 2026.

San Mateo 3 days, 23 hours ago

Caltrans : Roadwork on CA-1 Southbound at Marshall-petaluma Rd (Marshall). Lane closed until 3 PM. From 9:00 AM Friday, June 05, 2026 to 3:00 PM Friday, June 05, 2026.

Marin 4 days, 13 hours ago

Caltrans : Roadwork on CA-1 Southbound at Valley Ford Freestone Rd (Valley Ford). Lane closed. One way traffic control in effect. From 9:00 AM Friday, June 05, 2026 to 3:00 PM Friday, June 05, 2026.

Sonoma 4 days, 13 hours ago

Caltrans : Roadwork on CA-1 Southbound at Bodega Hwy (Bodega). Lane closed. One way traffic control in effect. From 9:00 AM Friday, June 05, 2026 to 3:00 PM Friday, June 05, 2026.

Sonoma 4 days, 13 hours 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, June 05, 2026 to 5:00 PM Friday, June 05, 2026.

San Mateo 4 days, 14 hours ago

Caltrans : Roadwork on CA-1 Southbound at Gravenstein Hwy (Valley Ford). Lane closed. One way traffic control in effect. From 9:00 AM Friday, June 05, 2026 to 12:00 PM Friday, June 05, 2026.

Sonoma 4 days, 16 hours ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 8 AM. From 6:00 PM Thursday, June 04, 2026 to 8:00 AM Friday, June 05, 2026.

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 Thursday, June 04, 2026 to 6:00 AM Friday, June 05, 2026.

San Mateo 4 days, 23 hours ago

Caltrans : Roadwork on CA-1 Southbound at Sir Francis Drake Blvd (Olema). Lane closed. One way traffic control in effect. From 8:00 AM Thursday, June 04, 2026 to 5:00 PM Thursday, June 04, 2026.

Marin 5 days, 12 hours ago

Caltrans : Roadwork on CA-1 Southbound at Bodega Hwy (Bodega). Lane closed. One way traffic control in effect. From 9:00 AM Thursday, June 04, 2026 to 3:00 PM Thursday, June 04, 2026.

Sonoma 5 days, 13 hours ago

Caltrans : Roadwork on CA-1 Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Thursday, June 04, 2026 to 5:00 PM Thursday, June 04, 2026.

San Mateo 5 days, 14 hours ago

Caltrans : Roadwork on CA-1 Southbound at Higgins Canyon Rd (Half Moon Bay). Lane closed until 8 AM. From 6:00 PM Wednesday, June 03, 2026 to 8:00 AM Thursday, June 04, 2026.

San Mateo 5 days, 23 hours ago

CHP : Disabled vehicle on CA-1 Southbound south of CA-17 N (Santa Cruz). Center lane blocked. Expect delays.

Moderate Accident

Santa Cruz 6 days, 12 hours ago

Caltrans : Roadwork on CA-1 Northbound and Southbound at Sir Francis Drake Blvd (Olema). Lane closed. One way traffic control in effect. From 8:00 AM Wednesday, June 03, 2026 to 5:00 PM Wednesday, June 03, 2026.

Marin 6 days, 13 hours ago

Caltrans : Roadwork on CA-1 Northbound and Southbound at CA-84 (San Gregorio). Lane closed. One way traffic control in effect. From 7:00 AM Wednesday, June 03, 2026 to 5:00 PM Wednesday, June 03, 2026.

San Mateo 6 days, 14 hours ago

Caltrans : Roadwork on CA-1 Southbound at Bodega Hwy (Bodega). Lane closed. One way traffic control in effect. From 9:00 AM Wednesday, June 03, 2026 to 12:00 PM Wednesday, June 03, 2026.

Sonoma 6 days, 16 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, June 02, 2026 to 6:00 AM Wednesday, June 03, 2026.

San Mateo 6 days, 23 hours ago