Accident High Severity Stale

CHP : Traffic Hazard on US-101 Northbound exiting at Grand Ave (South San Francisco). Off Ramp affected. Expect delays.

A high-severity accident was reported on US-101 N near San Mateo on August 9, 2026 at 5:45 PM.

Road

US-101 N

Area

San Mateo

Address

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Started

Aug 9, 10:45 AM

Last Updated

1 hour, 2 minutes ago

Aug 9, 11:15 AM

Coordinates

37.6544, -122.4070

Update History

1 observations

CHP : Traffic Hazard on US-101 Northbound exiting at Grand Ave (South San Francisco). Off Ramp affected. Expect delays. Aug 9, 11:00 AM

Source: 511_sfbay · ID 511.org/1533107 First seen Aug 9, 2026 11:00 AM