Accident Moderate Severity Resolved

CHP : Traffic Hazard on US-101 Southbound south of Sister Cities Blvd (South San Francisco). Lane affected. Expect delays.

A injury accident was reported on US-101 S near San Mateo on August 23, 2026 at 3:15 AM.

Road

US-101 S

Area

San Mateo

Address

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Started

Aug 22, 8:15 PM

Last Updated

2 months ago

Aug 22, 8:45 PM

Resolved

Aug 23, 2:45 AM

Coordinates

37.6674, -122.3951

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound south of Sister Cities Blvd (South San Francisco). Lane affected. Expect delays. Aug 22, 8:30 PM

Source: 511_sfbay · ID 511.org/1539505 First seen Aug 22, 2026 8:30 PM