Accident Moderate Severity Stale

CHP : Traffic Hazard on US-101 Southbound north of Ralston Ave (Belmont). Lane affected. Expect delays.

A injury accident was reported on US-101 S near San Mateo on August 19, 2026 at 12:29 AM.

Road

US-101 S

Area

San Mateo

Address

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Started

Aug 18, 5:29 PM

Last Updated

1 hour, 14 minutes ago

Aug 18, 5:30 PM

Coordinates

37.5293, -122.2737

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound north of Ralston Ave (Belmont). Lane affected. Expect delays. Aug 18, 5:30 PM

Source: 511_sfbay · ID 511.org/1537453 First seen Aug 18, 2026 5:30 PM