Accident Moderate Severity Resolved

CHP : Disabled vehicle on CA-4 Westbound at Byron Hwy (Brentwood). Right lane blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 11, 2026 at 12:52 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 10, 5:52 PM

Last Updated

2 weeks, 4 days ago

Jul 10, 6:30 PM

Resolved

Jul 11, 12:30 AM

Coordinates

37.8965, -121.6413

Update History

1 observations

CHP : Disabled vehicle on CA-4 Westbound at Byron Hwy (Brentwood). Right lane blocked. Expect delays. Jul 10, 6:15 PM

Source: 511_sfbay · ID 511.org/1519480 First seen Jul 10, 2026 6:15 PM