Accident Moderate Severity Resolved

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

A injury accident was reported on I-280 N near San Mateo on May 4, 2026 at 10:45 PM.

Road

I-280 N

Area

San Mateo

Address

Loading…

Started

May 4, 3:45 PM

Last Updated

5 months, 3 weeks ago

May 4, 4:45 PM

Resolved

May 4, 11:00 PM

Coordinates

37.6369, -122.4397

Update History

2 observations

CHP : Traffic Hazard on I-280 Northbound south of Avalon Dr (South San Francisco). Left lane blocked. Expect delays. May 4, 4:30 PM

CHP : Traffic Hazard on I-280 Northbound south of Avalon Dr (South San Francisco). Left lane blocked. Expect delays. May 4, 4:00 PM

Source: 511_sfbay · ID 511.org/1490010 First seen May 4, 2026 4:00 PM