Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Westbound at A St (Antioch). Left lane blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on April 10, 2026 at 3:46 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Apr 10, 8:46 AM

Last Updated

6 months, 2 weeks ago

Apr 10, 9:00 AM

Resolved

Apr 10, 3:00 PM

Coordinates

37.9985, -121.8057

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound at A St (Antioch). Left lane blocked. Expect delays. Apr 10, 9:00 AM

Source: 511_sfbay · ID 511.org/1479349 First seen Apr 10, 2026 9:00 AM