Accident High Severity Stale

CHP : Traffic Hazard on CA-4 Eastbound at Port Chicago Hwy (Concord). Off Ramp blocked. Expect delays.

A high-severity accident was reported on CA-4 E near Contra Costa on August 20, 2026 at 4:51 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Aug 19, 9:51 PM

Last Updated

34 minutes ago

Aug 19, 10:15 PM

Coordinates

38.0126, -122.0023

Update History

1 observations

CHP : Traffic Hazard on CA-4 Eastbound at Port Chicago Hwy (Concord). Off Ramp blocked. Expect delays. Aug 19, 10:00 PM

Source: 511_sfbay · ID 511.org/1538154 First seen Aug 19, 2026 10:00 PM