Accident Moderate Severity Resolved

CHP : Traffic Collision on US-101 Southbound north of Willow Rd (Menlo Park). Left lane blocked. Expect delays.

A injury accident was reported on US-101 S near San Mateo on September 27, 2026 at 10:04 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Sep 27, 3:04 PM

Last Updated

1 month ago

Sep 27, 3:30 PM

Resolved

Sep 27, 9:45 PM

Coordinates

37.4705, -122.1581

Update History

2 observations

CHP : Traffic Collision on US-101 Southbound north of Willow Rd (Menlo Park). Left lane blocked. Expect delays. Sep 27, 3:15 PM

CHP : Traffic Collision on US-101 Southbound north of Willow Rd (Menlo Park). Left lane blocked. Expect delays. Sep 27, 3:00 PM

Source: 511_sfbay · ID 511.org/1555589 First seen Sep 27, 2026 3:00 PM