Accident Moderate Severity Resolved

CHP : Traffic Collision on I-280 Northbound south of Avalon Dr (South San Francisco). Lane blocked. Expect delays.

A injury accident was reported on I-280 N near San Mateo on May 22, 2026 at 12:54 AM.

Road

I-280 N

Area

San Mateo

Address

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Started

May 21, 5:54 PM

Last Updated

14 hours, 22 minutes ago

May 21, 6:00 PM

Resolved

May 22, 12:15 AM

Coordinates

37.6369, -122.4397

Update History

2 observations

CHP : Traffic Collision on I-280 Northbound south of Avalon Dr (South San Francisco). Lane blocked. Expect delays. May 21, 6:00 PM

CHP : Traffic Collision on I-280 Northbound south of Avalon Dr (South San Francisco). Lane blocked. Expect delays. May 21, 5:45 PM

Source: 511_sfbay · ID 511.org/1497949 First seen May 21, 2026 5:45 PM