CA · County

San Mateo Car Accidents & Crashes

San Mateo County has recorded 3,311 traffic crashes since 2024, including 9 fatal incidents. In the last 24 hours, 16 new crashes were reported. Crash volume is highest on US-101 N/B and US-101 S/B.

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. CCRS records include party details, injury severity, vehicle information, and precise geographic coordinates. Last updated May 30, 2026.

Breakdown by type: 16 accident.

16

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

1

Today

Reported since midnight

Today's Accidents Today's Fatalities

showing most recent 16 incidents with location data · click a marker to view details

Crash Records

San Mateo Incidents 16 results

16 accident

CHP : Traffic Hazard on CA-92 Eastbound east of San Mateo Bridge - Eastbound Causeway (Foster City). Center lanes blocked. Expect delays.

CA-92 E 11 hours, 51 minutes ago

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

CA-1 S 14 hours, 21 minutes ago

CHP : Traffic Hazard on CA-92 Eastbound west of San Mateo Bridge - Eastbound Causeway (Foster City). Left lanes affected. Expect delays.

CA-92 E 1 day, 11 hours ago

CHP : Traffic Hazard on CA-92 Eastbound west of Lower Skyline Blvd (Unincorporated). Left lane affected. Expect delays.

CA-92 E 2 days, 9 hours ago

CHP : Disabled vehicle on CA-92 Eastbound east of Lemos Farms Rd (Unincorporated). Lane blocked. Expect delays.

CA-92 E 3 days, 1 hour ago

CHP : Vehicle fire on US-101 Northbound exiting at E Hillsdale Blvd (San Mateo). Off Ramp closed. Expect delays.

US-101 N 3 days, 10 hours ago

CHP : Traffic Hazard on CA-92 Eastbound west of San Mateo Bridge - High Rise (Foster City). Right lane blocked. Expect delays.

CA-92 E 3 days, 12 hours ago

CHP : Traffic Collision on US-101 Southbound entering at E Hillsdale Blvd (San Mateo). On Ramp affected. Expect delays.

US-101 S 3 days, 13 hours ago

CHP : Traffic Hazard on CA-92 Westbound at San Mateo Bridge - High Rise (Foster City). Right and center lanes blocked. Expect delays.

CA-92 W 3 days, 16 hours ago

CHP : Disabled vehicle on CA-92 Eastbound at San Mateo Bridge - Eastbound Causeway (Foster City). Right shoulder affected. Expect delays.

CA-92 E 3 days, 22 hours ago

CHP : Traffic Collision on CA-1 Northbound at Capistrano Rd (El Granada). Lanes blocked. Expect delays.

CA-1 N 3 days, 22 hours ago

CHP : Traffic Hazard on CA-92 Eastbound east of San Mateo Bridge - Eastbound Causeway (Foster City). Lane affected. Expect delays.

CA-92 E 4 days, 11 hours ago

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

CA-1 N 4 days, 16 hours ago

CHP : Traffic Collision on CA-84 Eastbound east of University Ave (Menlo Park). Lane affected. Expect delays.

CA-84 E 6 days, 8 hours ago

CHP : Traffic Hazard on I-280 Northbound entering at Bunker Hill Dr (San Mateo). On Ramp affected. Expect delays.

I-280 N 6 days, 13 hours ago

CHP : Traffic Collision on I-280 Northbound north of I-280 N-CA-1 N Split (Daly City). On Ramp affected. Expect delays.

I-280 N 6 days, 19 hours ago