Accident Resolved

CHP : Residual delays on US-101 Southbound north of E Poplar Ave (San Mateo). All lanes open. Expect delays.

A accident was reported on US-101 S near San Mateo on September 28, 2026 at 11:51 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Sep 28, 4:51 PM

Last Updated

4 weeks, 1 day ago

Sep 28, 7:00 PM

Resolved

Sep 29, 1:00 AM

Coordinates

37.5867, -122.3356

Update History

5 observations

CHP : Residual delays on US-101 Southbound north of E Poplar Ave (San Mateo). All lanes open. Expect delays. Sep 28, 7:00 PM

CHP : Severe traffic alert and Traffic Collision with Injuries on US-101 Southbound north of E Poplar Ave (San Mateo). Left lanes blocked. Expect delays. Sep 28, 6:30 PM

CHP : Severe traffic alert and Traffic Collision with Injuries on US-101 Southbound north of E Poplar Ave (San Mateo). Left lanes blocked. Expect delays. Sep 28, 5:30 PM

CHP : Traffic Collision with Injuries on US-101 Southbound north of E Poplar Ave (San Mateo). Left and center lanes affected. Expect delays. Sep 28, 5:15 PM

CHP : Traffic Collision with Injuries on US-101 Southbound north of E Poplar Ave (San Mateo). Left and center lanes affected. Expect delays. Sep 28, 5:00 PM

Source: 511_sfbay · ID 511.org/1556018 First seen Sep 28, 2026 5:00 PM