Accident Moderate Severity Resolved

CHP : Traffic Collision on I-280 Southbound south of CA-84 E (Woodside). Lane blocked. Expect delays.

A injury accident was reported on I-280 S near San Mateo on October 20, 2026 at 5:06 PM.

Road

I-280 S

Area

San Mateo

Address

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Started

Oct 20, 10:06 AM

Last Updated

6 days, 22 hours ago

Oct 20, 10:15 AM

Resolved

Oct 20, 4:30 PM

Coordinates

37.4327, -122.2402

Update History

2 observations

CHP : Traffic Collision on I-280 Southbound south of CA-84 E (Woodside). Lane blocked. Expect delays. Oct 20, 10:15 AM

CHP : Traffic Collision on I-280 Southbound north of Sand Hill Rd (Menlo Park). Left lane blocked. Expect delays. Oct 20, 10:00 AM

Source: 511_sfbay · ID 511.org/1566252 First seen Oct 20, 2026 10:00 AM