Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound west of Hillcrest Ave (Antioch). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on June 21, 2026 at 3:21 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jun 20, 8:21 PM

Last Updated

4 months, 1 week ago

Jun 20, 8:30 PM

Resolved

Jun 21, 2:45 AM

Coordinates

37.9972, -121.7901

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of Hillcrest Ave (Antioch). Lane affected. Expect delays. Jun 20, 8:30 PM

Source: 511_sfbay · ID 511.org/1511109 First seen Jun 20, 2026 8:30 PM