Accident High Severity Stale

CHP : Severe traffic alert and Traffic Collision with Injuries on US-101 Southbound north of Grand Ave (South San Francisco). Right and center lanes blocked. Expect delays.

A high-severity accident was reported on US-101 S near San Mateo on April 23, 2026 at 12:51 AM.

Address
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Started
Apr 22, 5:51 PM
Last Updated
2 hours, 18 minutes ago
Apr 22, 6:00 PM
Coordinates
37.6575, -122.4060
1 observations
CHP : Severe traffic alert and Traffic Collision with Injuries on US-101 Southbound north of Grand Ave (South San Francisco). Right and center lanes blocked. Expect delays. Apr 22, 6:00 PM
Source: 511_sfbay · ID 511.org/1484871 First seen Apr 22, 2026 6:00 PM