Accident Resolved

CHP : Traffic Collision on CA-4 Eastbound west of Somersville Rd (Antioch). Lanes open. Expect delays.

A accident was reported on CA-4 E near Contra Costa on August 2, 2026 at 5:39 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Aug 1, 10:39 PM

Last Updated

2 months, 3 weeks ago

Aug 2, 12:45 AM

Resolved

Aug 2, 7:00 AM

Coordinates

38.0024, -121.8327

Update History

5 observations

CHP : Traffic Collision on CA-4 Eastbound west of Somersville Rd (Antioch). Lanes open. Expect delays. Aug 1, 10:45 PM

CHP : Traffic Collision on CA-4 Eastbound west of Somersville Rd (Antioch). Lanes open. Expect delays. Aug 1, 10:00 PM

CHP : Traffic Collision on CA-4 Eastbound west of Somersville Rd (Antioch). Right shoulder affected. Expect delays. Aug 1, 9:45 PM

CHP : Traffic Collision on CA-4 Eastbound west of Somersville Rd (Antioch). Right shoulder affected. Expect delays. Aug 1, 9:30 PM

CHP : Traffic Collision on CA-4 Eastbound west of Somersville Rd (Antioch). Right shoulder affected. Expect delays. Aug 1, 9:00 PM

Source: 511_sfbay · ID 511.org/1529748 First seen Aug 1, 2026 9:00 PM