Accident Moderate Severity Resolved

CHP : Traffic Collision on US-101 Northbound at E Hillsdale Blvd (San Mateo). Lane affected. Expect delays.

A injury accident was reported on US-101 N near San Mateo on October 31, 2026 at 5:04 AM.

Road

US-101 N

Area

San Mateo

Address

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Started

Oct 30, 10:04 PM

Last Updated

10 hours, 9 minutes ago

Oct 30, 10:45 PM

Resolved

Oct 31, 4:45 AM

Coordinates

37.5461, -122.2850

Update History

2 observations

CHP : Traffic Collision on US-101 Northbound at E Hillsdale Blvd (San Mateo). Lane affected. Expect delays. Oct 30, 10:15 PM

CHP : Traffic Collision on US-101 Northbound at E Hillsdale Blvd (San Mateo). Lane affected. Expect delays. Oct 30, 10:00 PM

Source: 511_sfbay · ID 511.org/1571060 First seen Oct 30, 2026 10:00 PM