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 August 14, 2026 at 4:22 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 13, 9:22 PM

Last Updated

2 months, 1 week ago

Aug 13, 9:45 PM

Resolved

Aug 14, 3:45 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. Aug 13, 9:30 PM

Source: 511_sfbay · ID 511.org/1535378 First seen Aug 13, 2026 9:30 PM