San Mateo · Last 48 Hours

Traffic Accident San Mateo Today

36 accidents near San Mateo in the last 24 hours · 36 in 48 hours · updated April 6, 2026 6:24 PM PDT

36

Last 24h

36

Last 48h

5

High Severity

29

Accident

7

Construction

Last 6 hours

7 incidents

CHP : Traffic Hazard on I-280 Northbound ramp to CA-92 E (San Mateo). Connector ramp affected. Expect delays.

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

CHP : Disabled truck on US-101 Southbound at San Bruno Ave E (San Bruno). Left lane blocked. Expect delays.

Caltrans : Roadwork on CA-82 Northbound at Peninsula Ave (Burlingame). All lanes closed. Expect delays. From 9:00 AM Monday, April 06, 2026 to 6:00 PM Monday, April 06, 2026.

CHP : Traffic Collision on I-280 Southbound at CA-84 E (Woodside). Lane affected. Expect delays.

Caltrans : Roadwork on CA-82 Southbound at CA-92 E (San Mateo). Lanes closed until 3 PM. From 9:00 AM Monday, April 06, 2026 to 3:00 PM Monday, April 06, 2026.

Caltrans : Roadwork on CA-82 Southbound at Peninsula Ave (Burlingame). All lanes closed. Expect delays. From 9:00 AM Monday, April 06, 2026 to 6:00 PM Monday, April 06, 2026.

6–12 hours ago

6 incidents

Caltrans : Roadwork on CA-82 Southbound between I-380 W (San Bruno) and I-380 E (San Bruno). Lane closed until 2 PM. From 9:00 AM Monday, April 06, 2026 to 2:00 PM Monday, April 06, 2026.

Caltrans : Pothole Repair on CA-82 Northbound between W Santa Inez Ave (San Mateo) and Peninsula Ave (Burlingame). Lanes closed. From 8:00 AM Monday, April 06, 2026 to 5:00 PM Monday, April 06, 2026.

10h ago 8:00 AM

CHP : Traffic Hazard on I-280 Northbound south of Sand Hill Rd (Menlo Park). Left and center lanes affected. Expect delays.

10h ago 8:00 AM

CHP : Traffic Hazard on CA-92 Westbound entering at S Delaware St (San Mateo). On Ramp blocked. Expect delays.

10h ago 7:30 AM

CHP : Traffic Collision with Injuries on CA-35 Northbound at Hickey Blvd (Daly City). Lane affected. Expect delays.

11h ago 7:15 AM

Caltrans : Emergency construction on CA-1 Southbound at Santa Cruz County Line (Unincorporated). Lane closed. One way traffic control in effect. From 7:00 AM Monday, April 06, 2026 to 6:00 PM Monday, April 06, 2026.

12–24 hours ago

7 incidents

15h ago 3:15 AM

CHP : Traffic Hazard on US-101 Northbound south of Woodside Rd (Redwood City). Lane affected. Expect delays.

17h ago 12:45 AM

CHP : Traffic Hazard on US-101 Northbound at Sierra Point Pky (Brisbane). Lane affected. Expect delays.

19h ago 11:15 PM

CHP : Traffic Collision with Injuries on US-101 Northbound at Whipple Ave (Redwood City). Lane affected. Expect delays.

19h ago 10:30 PM

CHP : Vehicle fire on US-101 Northbound south of Whipple Ave (Redwood City). Lane blocked. Expect delays.

20h ago 9:30 PM

Caltrans : Roadwork on CA-82 Southbound at E Hillsdale Blvd (San Mateo). Lanes closed. From 9:00 PM Sunday, April 05, 2026 to 5:00 AM Monday, April 06, 2026.

21h ago 8:30 PM

CHP : Severe traffic alert and Traffic Collision on US-101 Northbound north of University Ave (East Palo Alto). Left and center lanes blocked. Expect delays.

23h ago 7:00 PM

CHP : Disabled vehicle on US-101 Northbound south of Broadway (Burlingame). Lane affected. Expect delays.

24–48 hours ago

16 incidents

CHP : Disabled vehicle on CA-84 Eastbound and Westbound west of I-280 S (Woodside). Lane blocked. Expect delays.

CHP : Traffic Collision with Injuries on CA-84 Eastbound and Westbound at CA-1 (San Gregorio). Lane affected. Expect delays.

1d ago 12:45 PM

CHP : Disabled vehicle on US-101 Southbound north of Woodside Rd (Redwood City). Lane affected. Expect delays.

1d ago 12:15 PM

CHP : Residual delays on I-280 Southbound north of Westborough Blvd (South San Francisco). Right shoulder affected. Expect delays.

1d ago 11:15 AM

CHP : Vehicle fire on I-280 Southbound north of Sneath Ln (San Bruno). Center Divider affected. Expect delays.

1d ago 11:15 AM

CHP : Traffic Collision with Injuries on I-280 Southbound at Avalon Dr (South San Francisco). Right lane closed. Expect delays.

1d ago 10:30 AM

CHP : Traffic Hazard on I-280 Southbound at Golf Course Dr (Unincorporated). Lane affected. Expect delays.

1d ago 10:00 AM

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

CHP : Traffic Collision on I-280 Southbound south of Bunker Hill Dr (San Mateo). Right shoulder affected. Expect delays.

CHP : Traffic Collision on US-101 Northbound south of Redwood Shores Pky (San Carlos). Lane affected. Expect delays.

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

1d ago 12:15 AM

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

1d ago 10:30 PM

CHP : Traffic Collision on US-101 Northbound south of Airport Exit (Millbrae). Right shoulder affected. Expect delays.

1d ago 10:00 PM

CHP : Brush fire on US-101 Southbound south of Airport Exit (Millbrae). Left shoulder affected. Expect delays.

CHP : Traffic Collision on CA-1 Northbound north of Linda Mar Blvd (Pacifica). Lane affected. Expect delays.

CHP : Disabled vehicle on CA-1 Northbound north of Linda Mar Blvd (Pacifica). Left lane blocked. Expect delays.

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