Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of Laurel Rd (Antioch). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on August 11, 2026 at 12:11 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 10, 5:11 PM

Last Updated

11 hours, 35 minutes ago

Aug 10, 5:30 PM

Resolved

Aug 10, 11:45 PM

Coordinates

37.9760, -121.7419

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of Laurel Rd (Antioch). Lane affected. Expect delays. Aug 10, 5:15 PM

Source: 511_sfbay · ID 511.org/1533665 First seen Aug 10, 2026 5:15 PM