Accident High Severity Resolved

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

A high-severity accident was reported on I-280 S near San Mateo on August 2, 2026 at 12:51 AM.

Road

I-280 S

Area

San Mateo

Address

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Started

Aug 1, 5:51 PM

Last Updated

2 months, 3 weeks ago

Aug 1, 6:15 PM

Resolved

Aug 2, 12:15 AM

Coordinates

37.6437, -122.4472

Update History

2 observations

CHP : Traffic Collision on I-280 Southbound at Westborough Blvd (South San Francisco). On Ramp affected. Expect delays. Aug 1, 6:00 PM

CHP : Traffic Collision on I-280 Southbound at Westborough Blvd (South San Francisco). On Ramp affected. Expect delays. Aug 1, 5:45 PM

Source: 511_sfbay · ID 511.org/1529681 First seen Aug 1, 2026 5:45 PM