Accident Moderate Severity Resolved

CHP : Traffic Collision on US-101 Southbound exiting at Sister Cities Blvd (South San Francisco). Right lane blocked. Expect delays.

A injury accident was reported on US-101 S near San Mateo on May 12, 2026 at 1:28 AM.

Road

US-101 S

Area

San Mateo

Address

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Started

May 11, 6:28 PM

Last Updated

5 months, 2 weeks ago

May 11, 7:30 PM

Resolved

May 12, 1:45 AM

Coordinates

37.6677, -122.3953

Update History

3 observations

CHP : Traffic Collision on US-101 Southbound exiting at Sister Cities Blvd (South San Francisco). Right lane blocked. Expect delays. May 11, 7:15 PM

CHP : Traffic Collision on US-101 Southbound exiting at Sister Cities Blvd (South San Francisco). Right lane blocked. Expect delays. May 11, 7:00 PM

CHP : Traffic Collision on US-101 Southbound exiting at Sister Cities Blvd (South San Francisco). Right lane blocked. Expect delays. May 11, 6:30 PM

Source: 511_sfbay · ID 511.org/1493141 First seen May 11, 2026 6:30 PM