Accident Moderate Severity Stale

CHP : Traffic Collision with Injuries on CA-4 Westbound east of Somersville Rd (Antioch). 4th lane from the left blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on August 7, 2026 at 3:30 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 6, 8:30 PM

Last Updated

1 hour ago

Aug 6, 8:45 PM

Coordinates

38.0035, -121.8355

Update History

1 observations

CHP : Traffic Collision with Injuries on CA-4 Westbound east of Somersville Rd (Antioch). 4th lane from the left blocked. Expect delays. Aug 6, 8:45 PM

Source: 511_sfbay · ID 511.org/1532114 First seen Aug 6, 2026 8:45 PM

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