Accident Moderate Severity Resolved

CHP : Traffic Hazard on US-101 Southbound north of E 4TH Ave (San Mateo). Left lane affected. Expect delays.

A injury accident was reported on US-101 S near San Mateo on August 4, 2026 at 2:11 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Aug 4, 7:11 AM

Last Updated

9 hours, 18 minutes ago

Aug 4, 7:30 AM

Resolved

Aug 4, 1:30 PM

Coordinates

37.5682, -122.3112

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound north of E 4TH Ave (San Mateo). Left lane affected. Expect delays. Aug 4, 7:30 AM

Source: 511_sfbay · ID 511.org/1530632 First seen Aug 4, 2026 7:30 AM