Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of Hillcrest Ave (Antioch). 3rd lane from the left affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 17, 2026 at 1:40 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 16, 6:40 PM

Last Updated

1 week, 5 days ago

Jul 16, 7:30 PM

Resolved

Jul 17, 1:45 AM

Coordinates

37.9956, -121.7804

Update History

2 observations

CHP : Traffic Hazard on CA-4 Westbound east of Hillcrest Ave (Antioch). 3rd lane from the left affected. Expect delays. Jul 16, 7:15 PM

CHP : Traffic Hazard on CA-4 Westbound east of Hillcrest Ave (Antioch). 3rd lane from the left affected. Expect delays. Jul 16, 6:45 PM

Source: 511_sfbay · ID 511.org/1522188 First seen Jul 16, 2026 6:45 PM