Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Eastbound at Walnut Blvd (Brentwood). Right shoulder affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on July 10, 2026 at 4:36 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Jul 9, 9:36 PM

Last Updated

3 weeks, 1 day ago

Jul 9, 10:00 PM

Resolved

Jul 10, 4:00 AM

Coordinates

37.8964, -121.6963

Update History

2 observations

CHP : Traffic Collision on CA-4 Eastbound at Walnut Blvd (Brentwood). Right shoulder affected. Expect delays. Jul 9, 9:45 PM

CHP : Traffic Collision on CA-4 Eastbound at Walnut Blvd (Brentwood). Right shoulder affected. Expect delays. Jul 9, 9:30 PM

Source: 511_sfbay · ID 511.org/1519059 First seen Jul 9, 2026 9:30 PM