Accident Moderate Severity Resolved

CHP : Traffic Hazard on US-101 Southbound south of E Hillsdale Blvd (San Mateo). Left lane affected. Expect delays.

A injury accident was reported on US-101 S near San Mateo on September 29, 2026 at 12:04 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Sep 29, 5:04 AM

Last Updated

4 weeks ago

Sep 29, 5:15 AM

Resolved

Sep 29, 11:30 AM

Coordinates

37.5481, -122.2913

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound south of E Hillsdale Blvd (San Mateo). Left lane affected. Expect delays. Sep 29, 5:15 AM

Source: 511_sfbay · ID 511.org/1556256 First seen Sep 29, 2026 5:15 AM