Accident Moderate Severity Stale

CHP : Traffic Collision on US-101 Southbound at Grand Ave (South San Francisco). Lane blocked. Expect delays.

A injury accident was reported on US-101 S near San Mateo on October 31, 2026 at 2:27 PM.

Road

US-101 S

Area

San Mateo

Address

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Started

Oct 31, 7:27 AM

Last Updated

1 hour, 44 minutes ago

Oct 31, 7:30 AM

Coordinates

37.6586, -122.4054

Update History

1 observations

CHP : Traffic Collision on US-101 Southbound at Grand Ave (South San Francisco). Lane blocked. Expect delays. Oct 31, 7:30 AM

Source: 511_sfbay · ID 511.org/1571170 First seen Oct 31, 2026 7:30 AM