Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound entering at Sand Creek Rd (Brentwood). On Ramp affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on August 31, 2026 at 1:56 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 31, 6:56 AM

Last Updated

1 month, 3 weeks ago

Aug 31, 7:00 AM

Resolved

Aug 31, 1:15 PM

Coordinates

37.9472, -121.7431

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound entering at Sand Creek Rd (Brentwood). On Ramp affected. Expect delays. Aug 31, 7:00 AM

Source: 511_sfbay · ID 511.org/1543073 First seen Aug 31, 2026 7:00 AM