Accident Moderate Severity Resolved

CHP : Traffic Hazard on US-101 Southbound north of E Poplar Ave (San Mateo). Lane affected. Expect delays.

A injury accident was reported on US-101 S near San Mateo on August 23, 2026 at 5:07 AM.

Road

US-101 S

Area

San Mateo

Address

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Started

Aug 22, 10:07 PM

Last Updated

18 hours, 37 minutes ago

Aug 22, 10:30 PM

Resolved

Aug 23, 4:30 AM

Coordinates

37.5812, -122.3254

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound north of E Poplar Ave (San Mateo). Lane affected. Expect delays. Aug 22, 10:15 PM

Source: 511_sfbay · ID 511.org/1539530 First seen Aug 22, 2026 10:15 PM