Accident Moderate Severity Stale

CHP : Traffic Hazard on US-101 Southbound north of E 3RD Ave (San Mateo). Right and center lanes affected. Expect delays.

A injury accident was reported on US-101 S near San Mateo on November 4, 2026 at 11:18 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Nov 4, 3:18 PM

Last Updated

3 hours, 54 minutes ago

Nov 4, 3:30 PM

Coordinates

37.5729, -122.3164

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound north of E 3RD Ave (San Mateo). Right and center lanes affected. Expect delays. Nov 4, 3:30 PM

Source: 511_sfbay · ID 511.org/1572981 First seen Nov 4, 2026 3:30 PM