Accident High Severity Resolved

CHP : Traffic Collision 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 May 8, 2026 at 12:59 AM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

May 7, 5:59 PM

Last Updated

1 month ago

May 7, 6:45 PM

Resolved

May 8, 1:00 AM

Coordinates

37.9472, -121.7431

Update History

2 observations

CHP : Traffic Collision on CA-4 Westbound entering at Sand Creek Rd (Brentwood). On Ramp affected. Expect delays. May 7, 6:30 PM

CHP : Traffic Collision on CA-4 Westbound entering at Sand Creek Rd (Brentwood). On Ramp affected. Expect delays. May 7, 6:15 PM

Source: 511_sfbay · ID 511.org/1491525 First seen May 7, 2026 6:15 PM