Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound entering at Cummings Skwy (Port Costa). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on April 21, 2026 at 6:44 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Apr 21, 11:44 AM

Last Updated

6 months ago

Apr 21, 12:45 PM

Resolved

Apr 21, 6:45 PM

Coordinates

38.0141, -122.1943

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound entering at Cummings Skwy (Port Costa). Lane affected. Expect delays. Apr 21, 12:30 PM

Source: 511_sfbay · ID 511.org/1484297 First seen Apr 21, 2026 12:30 PM