Accident Moderate Severity Resolved

CHP : Traffic Hazard on US-101 Southbound south of Marsh Rd (Menlo Park). Lane affected. Expect delays.

A injury accident was reported on US-101 S near San Mateo on September 29, 2026 at 12:46 AM.

Road

US-101 S

Area

San Mateo

Address

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Started

Sep 28, 5:46 PM

Last Updated

1 month ago

Sep 28, 6:00 PM

Resolved

Sep 29, 12:00 AM

Coordinates

37.4833, -122.1808

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound south of Marsh Rd (Menlo Park). Lane affected. Expect delays. Sep 28, 6:00 PM

Source: 511_sfbay · ID 511.org/1556046 First seen Sep 28, 2026 6:00 PM