CA · County

San Mateo Car Accidents & Crashes

San Mateo County has recorded 3,292 traffic crashes since 2024, including 9 fatal incidents. In the last 24 hours, 19 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 29, 2026.

Breakdown by type: 149 accident.

149

Total Crashes

Filtered results

3

Fatalities

Fatal injury reports

0

Today

Reported since midnight

Today's Accidents Today's Fatalities

showing most recent 149 incidents with location data · click a marker to view details

Crash Records

San Mateo Incidents 149 results

149 accident

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

CA-1 S 2 hours, 23 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 23 hours, 23 minutes ago

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

CA-92 E 1 day, 21 hours ago

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

CA-92 E 2 days, 13 hours ago

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

US-101 N 2 days, 22 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 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, 1 hour 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, 4 hours ago

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

CA-1 N 3 days, 10 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, 10 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 3 days, 23 hours ago

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

CA-1 N 4 days, 4 hours ago

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

CA-84 E 5 days, 20 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, 1 hour 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, 7 hours ago

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

CA-92 E 1 week ago

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

CA-92 E 1 week, 1 day ago

CHP : Traffic Hazard on CA-1 Northbound at Carlos St (Moss Beach). Lane affected. Expect delays.

CA-1 N 1 week, 1 day ago

CHP : Traffic Hazard on US-101 Northbound south of I-380 W (South San Francisco). Right lane and exit ramp affected. Expect delays.

US-101 N 1 week, 1 day ago

CHP : Disabled vehicle on CA-92 Eastbound east of Upper Skyline Blvd (Unincorporated). Lane blocked. Expect delays.

CA-92 E 1 week, 3 days ago

CHP : Residual delays on CA-92 Westbound west of Lower Skyline Blvd (Unincorporated). Right shoulder affected. Expect delays.

CA-92 W 1 week, 5 days ago

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

CA-1 S 1 week, 5 days ago

CHP : Traffic Hazard on CA-84 Westbound at Dumbarton Bridge - Toll Plaza (Fremont). Lane affected. Expect delays.

CA-84 W 1 week, 5 days ago

CHP : Traffic Collision with Injuries on CA-84 Westbound west of Dumbarton Bridge - Toll Plaza (Fremont). Right shoulder affected. Expect delays.

CA-84 W 1 week, 5 days ago

CHP : Traffic Collision with Injuries on I-280 Northbound at Edgewood Rd (Unincorporated). Off Ramp affected. Expect delays.

I-280 N 1 week, 5 days ago

CHP : Traffic Collision on CA-92 Eastbound east of Lemos Farms Rd (Unincorporated). Lane affected. Expect delays.

CA-92 E 1 week, 5 days ago

CHP : Disabled vehicle on CA-92 Eastbound at San Mateo Bridge - High Rise (Foster City). Lane affected. Expect delays.

CA-92 E 1 week, 5 days ago

CHP : Traffic Hazard on I-280 Southbound at Westborough Blvd (South San Francisco). On Ramp blocked. Expect delays.

I-280 S 1 week, 6 days ago

CHP : Residual delays on US-101 Southbound ramp to CA-92 E (San Mateo). Connector ramp affected. Expect delays.

US-101 S 1 week, 6 days ago

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

CA-1 S 1 week, 6 days ago

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

CA-92 E 2 weeks ago

CHP : Disabled vehicle on CA-92 Eastbound east of San Mateo Bridge - High Rise (Foster City). Left lane blocked. Expect delays.

CA-92 E 2 weeks, 1 day ago

Injury crash — 3 injured on US-101 S/B TO SR-92 W/B

US-101 S/B TO SR-92 W/B 2 weeks, 3 days ago

CHP : Traffic Collision with Injuries on I-280 Northbound exiting at John Daly Blvd (Daly City). Off Ramp affected. Expect delays.

I-280 N 2 weeks, 3 days ago

CHP : Disabled vehicle on I-280 Northbound exiting at Bunker Hill Dr (San Mateo). Off Ramp blocked. Expect delays.

I-280 N 2 weeks, 4 days ago

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

CA-84 E 2 weeks, 4 days ago

CHP : Traffic Collision with Injuries on CA-92 Eastbound east of Lemos Farms Rd (Unincorporated). Lanes affected. Expect delays.

CA-92 E 2 weeks, 4 days ago

CHP : Traffic Collision on CA-92 Westbound east of Pilarcitos Creek Rd (Unincorporated). Right shoulder affected. Expect delays.

CA-92 W 2 weeks, 5 days ago

CHP : Traffic Collision with Injuries on CA-92 Eastbound east of Lemos Farms Rd (Unincorporated). Right shoulder affected. Expect delays.

CA-92 E 2 weeks, 5 days ago

CHP : Residual delays on CA-1 Northbound at 1st St (Montara). Right shoulder affected. Expect delays.

CA-1 N 2 weeks, 5 days ago

CHP : Traffic Collision on US-101 Southbound exiting at Whipple Ave (Redwood City). Off Ramp blocked. Expect delays.

US-101 S 2 weeks, 6 days ago

CHP : Disabled vehicle on CA-92 Westbound at Lower Skyline Blvd (Unincorporated). Right shoulder affected. Expect delays.

CA-92 W 2 weeks, 6 days ago

CHP : Traffic Collision on US-101 Southbound north of E Poplar Ave (San Mateo). Off Ramp affected. Expect delays.

US-101 S 3 weeks ago

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

CA-84 E 3 weeks ago

Injury crash — 3 injured, broadside on N HUMBOLDT ST

N HUMBOLDT ST 3 weeks ago

CHP : Traffic Hazard on I-280 Southbound exiting at Sneath Ln (San Bruno). Off Ramp blocked. Expect delays.

I-280 S 3 weeks ago

CHP : Traffic Collision on CA-92 Eastbound at San Mateo Bridge - High Rise (Foster City). Left lane blocked. Expect delays.

CA-92 E 3 weeks, 1 day ago

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

CA-92 E 3 weeks, 1 day ago

CHP : Traffic Collision on I-380 Eastbound ramp to US-101 N (South San Francisco). Connector ramp blocked. Expect delays.

I-380 E 3 weeks, 1 day 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 weeks, 2 days ago