Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound south of Arnold Industrial Way (Concord). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on May 30, 2026 at 2:44 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

May 30, 7:44 AM

Last Updated

12 hours, 18 minutes ago

May 30, 7:45 AM

Resolved

May 30, 2:00 PM

Coordinates

38.0028, -122.0463

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound south of Arnold Industrial Way (Concord). Lane affected. Expect delays. May 30, 7:45 AM

Source: 511_sfbay · ID 511.org/1501376 First seen May 30, 2026 7:45 AM