Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound at Port Chicago Hwy (Concord). Left shoulder affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on September 3, 2026 at 4:25 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Sep 2, 9:25 PM

Last Updated

1 month, 3 weeks ago

Sep 2, 9:30 PM

Resolved

Sep 3, 3:30 AM

Coordinates

38.0126, -122.0023

Update History

1 observations

CHP : Traffic Hazard on CA-4 Eastbound at Port Chicago Hwy (Concord). Left shoulder affected. Expect delays. Sep 2, 9:30 PM

Source: 511_sfbay · ID 511.org/1544530 First seen Sep 2, 2026 9:30 PM