Accident High Severity Resolved

CHP : Traffic Collision on I-280 Northbound entering at Westborough Blvd (South San Francisco). On Ramp affected. Expect delays.

A high-severity accident was reported on I-280 N near San Mateo on July 5, 2026 at 5:54 PM.

Road

I-280 N

Area

San Mateo

Address

Loading…

Started

Jul 5, 10:54 AM

Last Updated

3 weeks, 2 days ago

Jul 5, 11:45 AM

Resolved

Jul 5, 5:45 PM

Coordinates

37.6437, -122.4472

Update History

1 observations

CHP : Traffic Collision on I-280 Northbound entering at Westborough Blvd (South San Francisco). On Ramp affected. Expect delays. Jul 5, 11:00 AM

Source: 511_sfbay · ID 511.org/1516998 First seen Jul 5, 2026 11:00 AM