CA · Highway

CA-1 S Accidents & Crashes

CA-1 S has recorded 641 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: 57 accident.

57

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 57 results

57 accident

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

San Mateo 2 days, 13 hours ago

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

Santa Cruz 1 week, 2 days ago

CHP : Disabled truck on CA-1 Southbound north of Old Devil's Slide Hwy (Pacifica). Lane blocked. Expect delays.

San Mateo 1 week, 2 days ago

CHP : Tractor trailer fire on CA-1 Southbound south of CA-17 N (Santa Cruz). Right and center lanes blocked. Expect delays.

Santa Cruz 1 week, 3 days ago

CHP : Police department activity on CA-1 Northbound and Southbound south of CA-17 S (Santa Cruz). All lanes blocked. Expect delays.

Santa Cruz 1 week, 3 days ago

CHP : Traffic Hazard on CA-1 Eastbound and Westbound north of Rocky Point Rd (Steep Ravine Trail) (). Lane affected. Expect delays.

Santa Cruz 1 week, 4 days ago

CHP : Traffic Collision with Injuries on CA-1 Eastbound and Westbound at Rocky Point Rd (Steep Ravine Trail) (). Lane affected. Expect delays.

Santa Cruz 2 weeks, 2 days ago

CHP : Traffic Hazard on CA-1 Southbound entering at Bay St (Unincorporated). Right lane affected. Expect delays.

San Mateo 2 weeks, 3 days ago

CHP : Disabled vehicle on CA-1 Southbound north of CA-84 (San Gregorio). Lanes blocked. Expect delays.

San Mateo 3 weeks, 6 days ago

CHP : Traffic Collision on CA-1 Southbound at Skyline Blvd (Daly City). Lanes blocked. Expect delays.

San Mateo 1 month ago

CHP : Traffic Hazard on CA-1 Southbound south of Monterey Rd (Pacifica). Lanes affected. Expect delays.

San Mateo 1 month ago

CHP : Traffic Collision with Injuries on CA-1 Southbound south of Carlos St (Moss Beach). Lane blocked. Expect delays.

San Mateo 1 month ago

CHP : Traffic Hazard on CA-1 Southbound at I-280 S-CA-1 S Join (Daly City). On Ramp blocked. Expect delays.

San Francisco 1 month, 2 weeks ago

CHP : Traffic Hazard on CA-1 Southbound south of Gravenstein Hwy (Valley Ford). Lane blocked. Expect delays.

Sonoma 1 month, 2 weeks ago

CHP : Traffic Collision with Injuries on CA-1 Southbound at Almonte Blvd (Unincorporated). Lane affected. Expect delays.

Marin 1 month, 2 weeks ago

CHP : Disabled vehicle on CA-1 Southbound north of Swanton Rd (Unincorporated). Lane blocked. Expect delays.

San Mateo 1 month, 3 weeks ago

CHP : Traffic Collision with Injuries on CA-1 Eastbound and Westbound at Garden Hwy (). Lane affected. Expect delays.

Santa Cruz 1 month, 3 weeks ago

CHP : Disabled tractor trailer on CA-1 Southbound at Devil's Slide Trail (Pacifica). Lane blocked. Expect delays.

San Mateo 1 month, 4 weeks ago

CHP : Traffic Hazard on CA-1 Southbound north of Old Devil's Slide Hwy (Pacifica). Lane affected. Expect delays.

San Mateo 2 months, 1 week ago

CHP : Traffic Hazard on CA-1 Southbound north of Carlos St (Moss Beach). Lane affected. Expect delays.

San Mateo 2 months, 1 week ago

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

Santa Cruz 2 months, 1 week ago

CHP : Traffic Collision with Injuries on CA-1 Southbound at Devil's Slide Trail (Pacifica). Lane blocked. Expect delays.

San Mateo 2 months, 1 week ago

CHP : Traffic Collision with Injuries on CA-1 Southbound at Devil's Slide Trail (Pacifica). Right shoulder affected. Expect delays.

San Mateo 2 months, 2 weeks ago

CHP : Traffic Collision on CA-1 Southbound at Mendocino County Line (Unincorporated). Lane affected. Expect delays.

Sonoma 2 months, 2 weeks ago

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

Sonoma 3 months ago

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

San Mateo 3 months ago

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

San Mateo 3 months ago

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

Santa Cruz 3 months ago

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

San Mateo 3 months, 1 week ago

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

Sonoma 3 months, 1 week ago

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

Santa Cruz 3 months, 2 weeks ago

CHP : Traffic Collision with Injuries on CA-1 Eastbound and Westbound at Rocky Point Rd (Steep Ravine Trail) (). Lane affected. Expect delays.

Santa Cruz 3 months, 4 weeks ago

CHP : Traffic Hazard on CA-1 Southbound south of Old Devil's Slide Hwy (Pacifica). Lane blocked. Expect delays.

San Mateo 4 months ago

CHP : Traffic Collision on CA-1 Southbound north of Devil's Slide Trail (Pacifica). Lane blocked. Expect delays.

San Mateo 4 months, 1 week ago

CHP : Traffic Hazard on CA-1 Southbound south of CA-17 N (Santa Cruz). Left and center lanes affected. Expect delays.

Santa Cruz 4 months, 1 week ago

CHP : Traffic Hazard on CA-1 Southbound north of Paloma Ave (Pacifica). Lanes affected. Expect delays.

San Mateo 4 months, 1 week ago

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

Santa Cruz 4 months, 1 week ago

CHP : Disabled vehicle on CA-1 Southbound at Devil's Slide Trail (Pacifica). Lanes blocked. Expect delays.

San Mateo 4 months, 2 weeks ago

CHP : Disabled vehicle on CA-1 Southbound north of Valley Ford Rd (Valley Ford). Lanes blocked. Expect delays.

Marin 4 months, 3 weeks ago

CHP : Traffic Collision on CA-1 Southbound north of CA-84 (San Gregorio). Lane affected. Expect delays.

San Mateo 4 months, 3 weeks ago

CHP : Landslide on CA-1 Southbound south of Muir Woods Rd (Unincorporated). Lane affected. Expect delays.

Marin 4 months, 4 weeks ago

CHP : Traffic Hazard on CA-1 Southbound at Mendocino County Line (Unincorporated). Lane blocked. Expect delays.

Sonoma 5 months ago

CHP : Traffic Collision with Injuries on CA-1 Southbound at Mendocino County Line (Unincorporated). Lanes blocked. Expect delays.

Sonoma 5 months ago

CHP : Traffic Hazard on CA-1 Southbound exiting at Paloma Ave (Pacifica). Off Ramp blocked. Expect delays.

San Mateo 5 months, 1 week ago

CHP : Traffic Collision with Injuries on CA-1 Southbound north of CA-84 (San Gregorio). Lane affected. Expect delays.

San Mateo 5 months, 1 week ago

CHP : Traffic Collision on CA-1 Southbound south of CA-17 N (Santa Cruz). Off Ramp affected. Expect delays.

Santa Cruz 5 months, 4 weeks ago

CHP : Traffic Collision on CA-1 Southbound at CA-17 N (Santa Cruz). Lanes blocked. Expect delays.

Santa Cruz 5 months, 4 weeks ago

CHP : Disabled vehicle on CA-1 Southbound at Devil's Slide Trail (Pacifica). Left shoulder blocked. Expect delays.

San Mateo 6 months ago

CHP : Traffic Collision on CA-1 Southbound at Devil's Slide Trail (Pacifica). Lane affected. Expect delays.

San Mateo 6 months ago

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

Santa Cruz 6 months ago