Accident Moderate Severity Resolved

CHP : Residual delays on CA-4 Eastbound west of Arnold Industrial Pl (Concord). Right shoulder affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on August 22, 2026 at 2:34 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Aug 22, 7:34 AM

Last Updated

2 days, 10 hours ago

Aug 22, 7:45 AM

Resolved

Aug 22, 1:45 PM

Coordinates

38.0023, -122.0472

Update History

2 observations

CHP : Residual delays on CA-4 Eastbound west of Arnold Industrial Pl (Concord). Right shoulder affected. Expect delays. Aug 22, 7:45 AM

CHP : Disabled tractor trailer on CA-4 Eastbound west of Arnold Industrial Pl (Concord). Right shoulder affected. Expect delays. Aug 22, 7:30 AM

Source: 511_sfbay · ID 511.org/1539275 First seen Aug 22, 2026 7:30 AM