Accident Moderate Severity Active

CHP : Traffic Collision on US-101 Southbound north of Grand Ave (South San Francisco). Lane affected. Expect delays.

A injury accident was reported on US-101 S near San Mateo on April 26, 2026 at 7:02 AM.

Road

US-101 S

Area

San Mateo

Address

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Started

Apr 26, 12:02 AM

Last Updated

1 minute ago

Apr 26, 12:30 AM

Coordinates

37.6586, -122.4054

Update History

4 observations

CHP : Traffic Collision on US-101 Southbound north of Grand Ave (South San Francisco). Lane affected. Expect delays. Apr 26, 12:15 AM

CHP : Traffic Collision on US-101 Southbound north of Grand Ave (South San Francisco). Lane affected. Expect delays. Apr 26, 12:00 AM

CHP : Traffic Collision on US-101 Southbound north of Grand Ave (South San Francisco). Lane affected. Expect delays. Apr 25, 11:45 PM

CHP : Traffic Collision on US-101 Southbound north of Grand Ave (South San Francisco). Lane affected. Expect delays. Apr 25, 11:30 PM

Source: 511_sfbay · ID 511.org/1486214 First seen Apr 25, 2026 11:30 PM