Accident High Severity Stale

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

A high-severity accident was reported on CA-4 E near Contra Costa on August 30, 2026 at 4:25 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Aug 30, 9:25 AM

Last Updated

1 hour, 48 minutes ago

Aug 30, 9:30 AM

Coordinates

38.0136, -121.9968

Update History

1 observations

CHP : Traffic Hazard on CA-4 Eastbound entering at Port Chicago Hwy (Concord). On Ramp affected. Expect delays. Aug 30, 9:30 AM

Source: 511_sfbay · ID 511.org/1542820 First seen Aug 30, 2026 9:30 AM