CA · County

San Mateo Car Accidents & Crashes

San Mateo County has recorded 4,580 traffic crashes since 2024, including 9 fatal incidents. In the last 24 hours, 30 new crashes were reported. Crash volume is highest on US-101 N/B and US-101 N.

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 July 29, 2026.

Breakdown by type: 1,339 accident.

1,339

Total Crashes

Filtered results

0

Fatalities

Fatal injury reports

0

Today

Reported since midnight

Today's Accidents Today's Fatalities

showing most recent 500 incidents with location data · click a marker to view details

Crash Records

San Mateo Incidents 1,339 results

1339 accident

CHP : Traffic Collision on I-380 Eastbound west of US-101 S (South San Francisco). Center Divider affected. Expect delays.

I-380 E 4 days, 2 hours ago

Traffic collision on US-101 N/B TO E. HILLSDALE BLVD

US-101 N/B TO E. HILLSDALE BLVD 1 week ago

Traffic collision on US-101 N/B

US-101 N/B 1 week ago

Traffic collision on US-101 NB

US-101 NB 1 week, 1 day ago

Traffic collision on US-101 SB

US-101 SB 1 week, 1 day ago

CHP : Traffic Collision with Injuries on CA-35 Northbound at CA-1 S (Daly City). Right shoulder affected. Expect delays.

CA-35 N 1 week, 2 days ago

CHP : Traffic Collision on I-380 Eastbound at El Camino Real (San Bruno). Lane affected. Expect delays.

I-380 E 1 week, 3 days ago

Traffic collision — hit and run on SR-92 W/B TO US-101 N/B

SR-92 W/B TO US-101 N/B 1 week, 3 days ago

Traffic collision, rear-end on US-101 N/B

US-101 N/B 1 week, 5 days ago

CHP : Residual delays on CA-92 Westbound east of W Hillsdale Blvd (San Mateo). Center Divider affected. Expect delays.

CA-92 W 1 week, 6 days ago

Traffic collision, rear-end on I-280 NORTHBOUND

I-280 NORTHBOUND 1 week, 6 days ago

Traffic collision, rear-end on SR-92 E/B

SR-92 E/B 1 week, 6 days ago

CHP : Traffic Collision on CA-35 Northbound at Westmoor Ave (Daly City). Lane blocked. Expect delays.

CA-35 N 2 weeks ago

Traffic collision, rear-end on SR-92 E/B FROM US-101 S/B

SR-92 E/B FROM US-101 S/B 2 weeks, 1 day ago

Traffic collision — hit and run on SR-92 W/B

SR-92 W/B 2 weeks, 3 days ago

CHP : Traffic Collision on US-101 Southbound north of S Airport Blvd (South San Francisco). Lane affected. Expect delays.

US-101 S 2 weeks, 3 days ago

CHP : Traffic Hazard on CA-35 Northbound north of CA-1 N (Daly City). Right lane blocked. Expect delays.

CA-35 N 2 weeks, 4 days ago

Traffic collision — hit and run on 1305 S DELAWARE ST

1305 S DELAWARE ST 2 weeks, 4 days ago

Traffic collision on US-101 N/B

US-101 N/B 2 weeks, 4 days ago

CHP : Residual delays on US-101 Southbound north of Whipple Ave (Redwood City). Center Divider affected. Expect delays.

US-101 S 2 weeks, 5 days ago

Traffic collision — hit and run on 107 S RAILROAD AV

107 S RAILROAD AV 2 weeks, 6 days ago

Traffic collision on US-101 N/B

US-101 N/B 2 weeks, 6 days ago

Traffic collision, rear-end on US-101 S/B

US-101 S/B 2 weeks, 6 days ago

Traffic collision, rear-end on US-101 N/B TO SR-92 E/B

US-101 N/B TO SR-92 E/B 3 weeks, 2 days ago

CHP : Traffic Collision on I-280 Northbound north of Golf Course Dr (Unincorporated). Center Divider affected. Expect delays.

I-280 N 3 weeks, 2 days ago

Traffic collision, rear-end on FLORES ST

FLORES ST 3 weeks, 2 days ago

Traffic collision on DE ANZA BL

DE ANZA BL 3 weeks, 4 days ago

CHP : Traffic Collision on US-101 Southbound at I-380 W (South San Francisco). Center Divider affected. Expect delays.

US-101 S 3 weeks, 5 days ago

Traffic collision — hit and run on US-101 N/B

US-101 N/B 3 weeks, 5 days ago

Traffic collision on B STREET

B STREET 3 weeks, 6 days ago

Traffic collision on US-101 S/B

US-101 S/B 3 weeks, 6 days ago

Traffic collision on US-101 N/B

US-101 N/B 4 weeks ago

Traffic collision, rear-end on PRIVATE PARKING LOT

PRIVATE PARKING LOT 4 weeks ago

Traffic collision — hit and run on NORTH IDAHO STREET

NORTH IDAHO STREET 4 weeks ago

CHP : Pothole on US-101 Southbound north of I-380 W (South San Francisco). Left lane affected. Expect delays.

US-101 S 4 weeks, 1 day ago

Traffic collision, broadside on MONTE DIABLO AV

MONTE DIABLO AV 1 month ago

Traffic collision on US-101 S/B

US-101 S/B 1 month ago

CHP : Traffic Collision on I-380 Eastbound at El Camino Real (San Bruno). Right lane blocked. Expect delays.

I-380 E 1 month ago

Traffic collision, rear-end — hit and run on SR-92 E/B TO FOSTER CITY BOULEVARD

SR-92 E/B TO FOSTER CITY BOULEVARD 1 month ago

Traffic collision, rear-end on US-101 N/B

US-101 N/B 1 month ago

Traffic collision — hit and run on SOUTH NORFOLK STREET

SOUTH NORFOLK STREET 1 month ago

Traffic collision, rear-end on US-101 N/B

US-101 N/B 1 month ago

Traffic collision, rear-end on US-101 N/B

US-101 N/B 1 month ago

Traffic collision, rear-end on US-101 N/B

US-101 N/B 1 month ago

Traffic collision, rear-end on US-101 N/B

US-101 N/B 1 month ago

Traffic collision on US-101 N/B TO SR-92

US-101 N/B TO SR-92 1 month ago

Traffic collision, rear-end on US-101 N/B

US-101 N/B 1 month ago

CHP : Traffic Collision with Injuries and Overturned vehicle on CA-1 Southbound between Old Devil's Slide Hwy (Pacifica) and Linda Mar Blvd (Pacifica). All lanes blocked. Avoid the area.

CA-1 S 1 month ago

Traffic collision, broadside — hit and run on S. DELAWARE ST

S. DELAWARE ST 1 month ago

Traffic collision — hit and run on 22ND AVE

22ND AVE 1 month, 1 week ago