Accident High Severity Stale

CHP : Traffic Hazard on US-101 Northbound south of I-380 W (South San Francisco). Right lane and exit ramp affected. Expect delays.

A high-severity accident was reported on US-101 N near San Mateo on May 21, 2026 at 3:28 PM.

Road

US-101 N

Area

San Mateo

Address

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Started

May 21, 8:28 AM

Last Updated

2 hours, 23 minutes ago

May 21, 8:45 AM

Coordinates

37.6362, -122.4037

Update History

1 observations

CHP : Traffic Hazard on US-101 Northbound south of I-380 W (South San Francisco). Right lane and exit ramp affected. Expect delays. May 21, 8:45 AM

Source: 511_sfbay · ID 511.org/1497688 First seen May 21, 2026 8:45 AM