Accident Moderate Severity Resolved

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

A injury accident was reported on CA-4 W near Contra Costa on September 12, 2026 at 7:29 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Sep 12, 12:29 PM

Last Updated

1 month, 2 weeks ago

Sep 12, 12:45 PM

Resolved

Sep 12, 7:00 PM

Coordinates

38.0107, -122.0175

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of Port Chicago Hwy (Concord). Right lanes blocked. Expect delays. Sep 12, 12:45 PM

Source: 511_sfbay · ID 511.org/1548498 First seen Sep 12, 2026 12:45 PM