Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of CA-160 (Antioch). Lanes blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 10, 2026 at 12:34 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 9, 5:34 PM

Last Updated

2 weeks, 6 days ago

Jul 9, 6:45 PM

Resolved

Jul 10, 12:45 AM

Coordinates

37.9891, -121.7524

Update History

2 observations

CHP : Traffic Hazard on CA-4 Westbound east of CA-160 (Antioch). Lanes blocked. Expect delays. Jul 9, 6:30 PM

CHP : Traffic Hazard on CA-4 Westbound east of CA-160 (Antioch). Right lane blocked. Expect delays. Jul 9, 5:45 PM

Source: 511_sfbay · ID 511.org/1518939 First seen Jul 9, 2026 5:45 PM