Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound west of Somersville Rd (Antioch). Right lane affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on June 7, 2026 at 12:34 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Jun 6, 5:34 PM

Last Updated

3 days, 11 hours ago

Jun 6, 5:45 PM

Resolved

Jun 6, 11:45 PM

Coordinates

38.0024, -121.8327

Update History

1 observations

CHP : Traffic Hazard on CA-4 Eastbound west of Somersville Rd (Antioch). Right lane affected. Expect delays. Jun 6, 5:45 PM

Source: 511_sfbay · ID 511.org/1504733 First seen Jun 6, 2026 5:45 PM