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 May 18, 2026 at 12:27 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

May 18, 5:27 AM

Last Updated

5 months, 1 week ago

May 18, 5:30 AM

Resolved

May 18, 11:30 AM

Coordinates

37.6696, -122.3931

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound south of Sister Cities Blvd (South San Francisco). Lane affected. Expect delays. May 18, 5:30 AM

Source: 511_sfbay · ID 511.org/1496019 First seen May 18, 2026 5:30 AM