Accident Moderate Severity Resolved

CHP : Traffic Collision on US-101 Southbound south of Marsh Rd (Menlo Park). 2nd lane from the left blocked. Expect delays.

A injury accident was reported on US-101 S near San Mateo on October 20, 2026 at 4:57 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Oct 20, 9:57 AM

Last Updated

1 week, 2 days ago

Oct 20, 10:00 AM

Resolved

Oct 20, 4:15 PM

Coordinates

37.4819, -122.1778

Update History

1 observations

CHP : Traffic Collision on US-101 Southbound south of Marsh Rd (Menlo Park). 2nd lane from the left blocked. Expect delays. Oct 20, 10:00 AM

Source: 511_sfbay · ID 511.org/1566254 First seen Oct 20, 2026 10:00 AM