Accident High Severity Resolved

CHP : Traffic Hazard on I-280 Northbound north of Sand Hill Rd (Menlo Park). On Ramp affected. Expect delays.

A high-severity accident was reported on I-280 N near San Mateo on September 12, 2026 at 9:32 PM.

Road

I-280 N

Area

San Mateo

Address

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Started

Sep 12, 2:32 PM

Last Updated

1 month, 2 weeks ago

Sep 12, 3:00 PM

Resolved

Sep 12, 9:15 PM

Coordinates

37.4214, -122.2244

Update History

1 observations

CHP : Traffic Hazard on I-280 Northbound north of Sand Hill Rd (Menlo Park). On Ramp affected. Expect delays. Sep 12, 2:45 PM

Source: 511_sfbay · ID 511.org/1548539 First seen Sep 12, 2026 2:45 PM