Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of A St (Antioch). 4th lane from the left affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on May 26, 2026 at 10:25 PM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

May 26, 3:25 PM

Last Updated

8 hours, 3 minutes ago

May 26, 3:45 PM

Resolved

May 26, 10:00 PM

Coordinates

37.9985, -121.8057

Update History

2 observations

CHP : Traffic Hazard on CA-4 Westbound east of A St (Antioch). 4th lane from the left affected. Expect delays. May 26, 3:45 PM

CHP : Traffic Hazard on CA-4 Westbound east of Somersville Rd (Antioch). 3rd lane from the left affected. Expect delays. May 26, 3:30 PM

Source: 511_sfbay · ID 511.org/1499609 First seen May 26, 2026 3:30 PM