Accident Moderate Severity Resolved

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

A injury accident was reported on US-101 S near San Mateo on October 23, 2026 at 2:29 AM.

Road

US-101 S

Area

San Mateo

Address

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Started

Oct 22, 7:29 PM

Last Updated

6 days, 1 hour ago

Oct 22, 7:30 PM

Resolved

Oct 23, 1:45 AM

Coordinates

37.4833, -122.1808

Update History

1 observations

CHP : Traffic Collision on US-101 Southbound south of Marsh Rd (Menlo Park). Right shoulder affected. Expect delays. Oct 22, 7:30 PM

Source: 511_sfbay · ID 511.org/1567364 First seen Oct 22, 2026 7:30 PM