Accident Moderate Severity Resolved

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

A injury accident was reported on CA-4 W near Contra Costa on June 2, 2026 at 1:44 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jun 1, 6:44 PM

Last Updated

4 months, 3 weeks ago

Jun 1, 6:45 PM

Resolved

Jun 2, 1:00 AM

Coordinates

38.0028, -122.0463

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of Arnold Industrial Way (Concord). Right shoulder affected. Expect delays. Jun 1, 6:45 PM

Source: 511_sfbay · ID 511.org/1502351 First seen Jun 1, 2026 6:45 PM