Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of Hillcrest Ave (Antioch). Right lane blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 19, 2026 at 6:18 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 19, 11:18 AM

Last Updated

1 week, 3 days ago

Jul 19, 11:30 AM

Resolved

Jul 19, 5:45 PM

Coordinates

37.9956, -121.7804

Update History

2 observations

CHP : Traffic Hazard on CA-4 Westbound east of Hillcrest Ave (Antioch). Right lane blocked. Expect delays. Jul 19, 11:30 AM

CHP : Disabled vehicle on CA-4 Westbound east of Hillcrest Ave (Antioch). Lane affected. Expect delays. Jul 19, 11:15 AM

Source: 511_sfbay · ID 511.org/1523234 First seen Jul 19, 2026 11:15 AM