Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Westbound at Port Chicago Hwy (Concord). 3rd lane from the left blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on June 23, 2026 at 4:31 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jun 23, 9:31 AM

Last Updated

4 months ago

Jun 23, 9:45 AM

Resolved

Jun 23, 4:15 PM

Coordinates

38.0101, -122.0213

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound at Port Chicago Hwy (Concord). 3rd lane from the left blocked. Expect delays. Jun 23, 9:45 AM

Source: 511_sfbay · ID 511.org/1512008 First seen Jun 23, 2026 9:45 AM