Accident High Severity Resolved

CHP : Traffic Hazard on US-101 Southbound ramp to CA-92 E (San Mateo). Connector ramp blocked. Expect delays.

A high-severity accident was reported on US-101 S near San Mateo on September 18, 2026 at 7:35 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Sep 18, 12:35 PM

Last Updated

1 month, 1 week ago

Sep 18, 1:00 PM

Resolved

Sep 18, 7:00 PM

Coordinates

37.5529, -122.2960

Update History

1 observations

CHP : Traffic Hazard on US-101 Southbound ramp to CA-92 E (San Mateo). Connector ramp blocked. Expect delays. Sep 18, 12:45 PM

Source: 511_sfbay · ID 511.org/1551392 First seen Sep 18, 2026 12:45 PM