Accident High Severity Stale

CHP : Traffic Collision on US-101 Northbound south of E 3RD Ave (San Mateo). Off Ramp affected. Expect delays.

A high-severity accident was reported on US-101 N near San Mateo on June 18, 2026 at 8:09 AM.

Road

US-101 N

Area

San Mateo

Address

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Started

Jun 18, 1:09 AM

Last Updated

56 minutes ago

Jun 18, 1:15 AM

Coordinates

37.5680, -122.3107

Update History

2 observations

CHP : Traffic Collision on US-101 Northbound south of E 3RD Ave (San Mateo). Off Ramp affected. Expect delays. Jun 18, 1:15 AM

CHP : Traffic Collision on US-101 Northbound south of E 3RD Ave (San Mateo). Off Ramp affected. Expect delays. Jun 18, 12:15 AM

Source: 511_sfbay · ID 511.org/1509784 First seen Jun 18, 2026 12:15 AM