Accident High Severity Stale

CHP : Traffic Collision on I-280 Northbound north of Alpine Rd (Menlo Park). Off Ramp affected. Expect delays.

A high-severity accident was reported on I-280 N near San Mateo on April 27, 2026 at 1:18 AM.

Road

I-280 N

Area

San Mateo

Address

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Started

Apr 26, 6:18 PM

Last Updated

40 minutes ago

Apr 26, 7:15 PM

Coordinates

37.4106, -122.1988

Update History

2 observations

CHP : Traffic Collision on I-280 Northbound north of Alpine Rd (Menlo Park). Off Ramp affected. Expect delays. Apr 26, 6:30 PM

CHP : Traffic Collision on I-280 Northbound north of Alpine Rd (Menlo Park). Lane blocked. Expect delays. Apr 26, 6:15 PM

Source: 511_sfbay · ID 511.org/1486428 First seen Apr 26, 2026 6:15 PM