Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound at CA-160 (Antioch). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 29, 2026 at 4:19 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 28, 9:19 PM

Last Updated

19 hours, 37 minutes ago

Jul 28, 9:30 PM

Resolved

Jul 29, 3:45 AM

Coordinates

37.9917, -121.7650

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound at CA-160 (Antioch). Lane affected. Expect delays. Jul 28, 9:30 PM

Source: 511_sfbay · ID 511.org/1527676 First seen Jul 28, 2026 9:30 PM