Accident Moderate Severity Resolved

CHP : Traffic Collision with Injuries on US-101 Southbound at Marsh Rd (Menlo Park). Lane affected. Expect delays.

A injury accident was reported on US-101 S near San Mateo on October 4, 2026 at 10:46 AM.

Road

US-101 S

Area

San Mateo

Address

Loading…

Started

Oct 4, 3:46 AM

Last Updated

3 weeks, 2 days ago

Oct 4, 4:45 AM

Resolved

Oct 4, 10:45 AM

Coordinates

37.4844, -122.1843

Update History

2 observations

CHP : Traffic Collision with Injuries on US-101 Southbound at Marsh Rd (Menlo Park). Lane affected. Expect delays. Oct 4, 4:15 AM

CHP : Traffic Collision on US-101 Southbound at Marsh Rd (Menlo Park). Lane affected. Expect delays. Oct 4, 2:30 AM

Source: 511_sfbay · ID 511.org/1558772 First seen Oct 4, 2026 2:30 AM