Accident High Severity Stale

CHP : Traffic Hazard on CA-4 Westbound at Byron Hwy (Brentwood). Center lanes affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on August 26, 2026 at 8:06 PM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

Aug 26, 1:06 PM

Last Updated

1 hour, 32 minutes ago

Aug 26, 1:30 PM

Coordinates

37.8965, -121.6413

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound at Byron Hwy (Brentwood). Center lanes affected. Expect delays. Aug 26, 1:15 PM

Source: 511_sfbay · ID 511.org/1541108 First seen Aug 26, 2026 1:15 PM