Accident Moderate Severity Resolved

CHP : Traffic Hazard on I-280 Southbound south of Westborough Blvd (South San Francisco). Lane affected. Expect delays.

A injury accident was reported on I-280 S near San Mateo on October 21, 2026 at 1:44 PM.

Road

I-280 S

Area

San Mateo

Address

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Started

Oct 21, 6:44 AM

Last Updated

6 days, 4 hours ago

Oct 21, 6:45 AM

Resolved

Oct 21, 12:45 PM

Coordinates

37.6437, -122.4472

Update History

4 observations

CHP : Traffic Hazard on I-280 Southbound south of Westborough Blvd (South San Francisco). Lane affected. Expect delays. Oct 21, 6:45 AM

CHP : Traffic Hazard on I-280 Southbound south of Westborough Blvd (South San Francisco). Lane affected. Expect delays. Oct 21, 6:30 AM

CHP : Traffic Hazard on I-280 Southbound south of Westborough Blvd (South San Francisco). Lane affected. Expect delays. Oct 21, 6:15 AM

CHP : Traffic Hazard on I-280 Southbound south of Westborough Blvd (South San Francisco). Lane affected. Expect delays. Oct 21, 6:00 AM

Source: 511_sfbay · ID 511.org/1566606 First seen Oct 21, 2026 6:00 AM