Accident Moderate Severity Resolved

CHP : Traffic Collision with Injuries on CA-4 Eastbound at Byron Hwy (Brentwood). Lane affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on April 27, 2026 at 5:31 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Apr 26, 10:31 PM

Last Updated

23 hours, 20 minutes ago

Apr 27, 5:00 AM

Resolved

Apr 27, 11:15 AM

Coordinates

37.8965, -121.6413

Update History

1 observations

CHP : Traffic Collision with Injuries on CA-4 Eastbound at Byron Hwy (Brentwood). Lane affected. Expect delays. Apr 27, 12:45 AM

Source: 511_sfbay · ID 511.org/1486475 First seen Apr 27, 2026 12:45 AM