Accident Moderate Severity Stale

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

A injury accident was reported on US-101 S near San Mateo on August 21, 2026 at 2:18 AM.

Road

US-101 S

Area

San Mateo

Address

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Started

Aug 20, 7:18 PM

Last Updated

1 hour, 1 minute ago

Aug 20, 7:30 PM

Coordinates

37.6934, -122.3917

Update History

1 observations

CHP : Traffic Collision on US-101 Southbound north of Lagoon Way (South San Francisco). Lane affected. Expect delays. Aug 20, 7:30 PM

Source: 511_sfbay · ID 511.org/1538578 First seen Aug 20, 2026 7:30 PM