Accident High Severity Resolved

CHP : Residual delays on CA-4 Westbound entering at Sand Creek Rd (Brentwood). Left shoulder affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on October 20, 2026 at 3:41 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Oct 20, 8:41 AM

Last Updated

6 days, 20 hours ago

Oct 20, 8:45 AM

Resolved

Oct 20, 2:45 PM

Coordinates

37.9472, -121.7431

Update History

1 observations

CHP : Residual delays on CA-4 Westbound entering at Sand Creek Rd (Brentwood). Left shoulder affected. Expect delays. Oct 20, 8:45 AM

Source: 511_sfbay · ID 511.org/1566195 First seen Oct 20, 2026 8:45 AM