Accident Resolved

CHP : Traffic Collision on CA-4 Eastbound east of Somersville Rd (Antioch). All lanes open. Expect delays.

A accident was reported on CA-4 E near Contra Costa on August 8, 2026 at 10:22 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Aug 8, 3:22 AM

Last Updated

2 months, 2 weeks ago

Aug 8, 3:30 AM

Resolved

Aug 8, 9:45 AM

Coordinates

38.0024, -121.8327

Update History

1 observations

CHP : Traffic Collision on CA-4 Eastbound east of Somersville Rd (Antioch). All lanes open. Expect delays. Aug 8, 3:30 AM

Source: 511_sfbay · ID 511.org/1532764 First seen Aug 8, 2026 3:30 AM