Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Eastbound west of Cummings Skwy (Port Costa). Lane affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on August 31, 2026 at 3:26 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Aug 31, 8:26 AM

Last Updated

1 month, 3 weeks ago

Aug 31, 8:30 AM

Resolved

Aug 31, 2:45 PM

Coordinates

38.0129, -122.1960

Update History

1 observations

CHP : Traffic Collision on CA-4 Eastbound west of Cummings Skwy (Port Costa). Lane affected. Expect delays. Aug 31, 8:30 AM

Source: 511_sfbay · ID 511.org/1543106 First seen Aug 31, 2026 8:30 AM