Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of Port Chicago Hwy (Concord). Left and center lanes blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on October 19, 2026 at 10:34 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Oct 19, 3:34 PM

Last Updated

1 week ago

Oct 19, 4:00 PM

Resolved

Oct 19, 10:15 PM

Coordinates

38.0109, -122.0164

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of Port Chicago Hwy (Concord). Left and center lanes blocked. Expect delays. Oct 19, 4:00 PM

Source: 511_sfbay · ID 511.org/1565897 First seen Oct 19, 2026 4:00 PM