Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of A St (Antioch). Center lane blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on October 24, 2026 at 12:40 AM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

Oct 23, 5:40 PM

Last Updated

3 days, 11 hours ago

Oct 23, 5:45 PM

Resolved

Oct 23, 11:45 PM

Coordinates

37.9984, -121.8016

Update History

2 observations

CHP : Traffic Hazard on CA-4 Westbound east of A St (Antioch). Center lane blocked. Expect delays. Oct 23, 5:45 PM

CHP : Traffic Hazard on CA-4 Westbound east of A St (Antioch). Lane affected. Expect delays. Oct 23, 5:30 PM

Source: 511_sfbay · ID 511.org/1567786 First seen Oct 23, 2026 5:30 PM