Accident Moderate Severity Resolved

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

A injury accident was reported on US-101 S near San Mateo on April 12, 2026 at 12:15 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Apr 12, 5:15 AM

Last Updated

6 months, 2 weeks ago

Apr 12, 5:45 AM

Resolved

Apr 12, 12:00 PM

Coordinates

37.5400, -122.2839

Update History

4 observations

CHP : Traffic Collision on US-101 Southbound at E Hillsdale Blvd (San Mateo). Lane affected. Expect delays. Apr 12, 5:30 AM

CHP : Traffic Collision on US-101 Southbound at E Hillsdale Blvd (San Mateo). Lane affected. Expect delays. Apr 12, 5:15 AM

CHP : Traffic Collision on US-101 Southbound at E Hillsdale Blvd (San Mateo). Lane affected. Expect delays. Apr 12, 5:00 AM

CHP : Traffic Collision on US-101 Southbound at E Hillsdale Blvd (San Mateo). Lane affected. Expect delays. Apr 12, 4:30 AM

Source: 511_sfbay · ID 511.org/1480239 First seen Apr 12, 2026 4:30 AM