Accident High Severity Resolved

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

A high-severity accident was reported on I-280 S near San Mateo on May 17, 2026 at 1:19 AM.

Road

I-280 S

Area

San Mateo

Address

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Started

May 16, 6:19 PM

Last Updated

1 week, 6 days ago

May 16, 6:30 PM

Resolved

May 17, 12:30 AM

Coordinates

37.6437, -122.4472

Update History

1 observations

CHP : Traffic Hazard on I-280 Southbound at Westborough Blvd (South San Francisco). On Ramp blocked. Expect delays. May 16, 6:30 PM

Source: 511_sfbay · ID 511.org/1495545 First seen May 16, 2026 6:30 PM