Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Eastbound at Port Chicago Hwy (Concord). Right shoulder blocked. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on September 13, 2026 at 1:23 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Sep 12, 6:23 PM

Last Updated

1 month, 2 weeks ago

Sep 12, 7:00 PM

Resolved

Sep 13, 1:00 AM

Coordinates

38.0106, -122.0155

Update History

1 observations

CHP : Traffic Collision on CA-4 Eastbound at Port Chicago Hwy (Concord). Right shoulder blocked. Expect delays. Sep 12, 6:45 PM

Source: 511_sfbay · ID 511.org/1548620 First seen Sep 12, 2026 6:45 PM