Accident High Severity Stale

CHP : Disabled vehicle on CA-4 Westbound exiting at A St (Antioch). Off Ramp affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on August 6, 2026 at 7:04 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 6, 12:04 PM

Last Updated

1 hour, 33 minutes ago

Aug 6, 12:15 PM

Coordinates

37.9984, -121.8016

Update History

1 observations

CHP : Disabled vehicle on CA-4 Westbound exiting at A St (Antioch). Off Ramp affected. Expect delays. Aug 6, 12:15 PM

Source: 511_sfbay · ID 511.org/1531862 First seen Aug 6, 2026 12:15 PM