Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound west of Arnold Industrial Way (Concord). Center lanes blocked. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on July 17, 2026 at 12:31 AM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

Jul 16, 5:31 PM

Last Updated

2 weeks ago

Jul 16, 5:45 PM

Resolved

Jul 17, 12:00 AM

Coordinates

38.0028, -122.0463

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of Arnold Industrial Way (Concord). Center lanes blocked. Expect delays. Jul 16, 5:45 PM

Source: 511_sfbay · ID 511.org/1522144 First seen Jul 16, 2026 5:45 PM