Accident High Severity Stale

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

A high-severity accident was reported on I-280 N near San Mateo on April 23, 2026 at 10:41 PM.

Road

I-280 N

Area

San Mateo

Address

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Started

Apr 23, 3:41 PM

Last Updated

1 hour, 9 minutes ago

Apr 23, 4:30 PM

Coordinates

37.4076, -122.1904

Update History

2 observations

CHP : Traffic Collision on I-280 Northbound exiting at Alpine Rd (Menlo Park). Off Ramp affected. Expect delays. Apr 23, 4:15 PM

CHP : Traffic Collision on I-280 Northbound exiting at Alpine Rd (Menlo Park). Off Ramp affected. Expect delays. Apr 23, 4:00 PM

Source: 511_sfbay · ID 511.org/1485249 First seen Apr 23, 2026 4:00 PM