Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound east of Somersville Rd (Antioch). Lane affected. Expect delays.

A injury accident was reported on CA-4 E near Contra Costa on June 20, 2026 at 3:25 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Jun 19, 8:25 PM

Last Updated

4 months, 1 week ago

Jun 19, 8:45 PM

Resolved

Jun 20, 2:45 AM

Coordinates

38.0048, -121.8413

Update History

1 observations

CHP : Traffic Hazard on CA-4 Eastbound east of Somersville Rd (Antioch). Lane affected. Expect delays. Jun 19, 8:30 PM

Source: 511_sfbay · ID 511.org/1510743 First seen Jun 19, 2026 8:30 PM