Accident Moderate Severity Resolved

CHP : Residual delays on CA-4 Westbound east of Port Chicago Hwy (Concord). Right shoulder affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on October 22, 2026 at 3:54 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Oct 21, 8:54 PM

Last Updated

5 days, 16 hours ago

Oct 21, 9:00 PM

Resolved

Oct 22, 3:15 AM

Coordinates

38.0107, -122.0175

Update History

1 observations

CHP : Residual delays on CA-4 Westbound east of Port Chicago Hwy (Concord). Right shoulder affected. Expect delays. Oct 21, 9:00 PM

Source: 511_sfbay · ID 511.org/1566924 First seen Oct 21, 2026 9:00 PM