Accident High Severity Resolved

CHP : Traffic Collision on US-101 Southbound entering at CA-92 E (San Mateo). On Ramp blocked. Expect delays.

A high-severity accident was reported on US-101 S near San Mateo on July 28, 2026 at 3:30 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Jul 28, 8:30 AM

Last Updated

1 day, 7 hours ago

Jul 28, 9:45 AM

Resolved

Jul 28, 3:45 PM

Coordinates

37.5529, -122.2960

Update History

2 observations

CHP : Traffic Collision on US-101 Southbound entering at CA-92 E (San Mateo). On Ramp blocked. Expect delays. Jul 28, 9:15 AM

CHP : Traffic Collision on US-101 Southbound entering at CA-92 E (San Mateo). On Ramp blocked. Expect delays. Jul 28, 8:45 AM

Source: 511_sfbay · ID 511.org/1527313 First seen Jul 28, 2026 8:45 AM