Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Westbound at G St (Antioch). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on June 13, 2026 at 6:05 AM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

Jun 12, 11:05 PM

Last Updated

13 hours, 34 minutes ago

Jun 12, 11:15 PM

Resolved

Jun 13, 5:30 AM

Coordinates

37.9984, -121.8117

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound at G St (Antioch). Lane affected. Expect delays. Jun 12, 11:15 PM

Source: 511_sfbay · ID 511.org/1507748 First seen Jun 12, 2026 11:15 PM