Accident Moderate Severity Resolved

CHP : Disabled vehicle on CA-4 Westbound west of Somersville Rd (Antioch). Left lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on June 7, 2026 at 12:43 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jun 6, 5:43 PM

Last Updated

3 days, 8 hours ago

Jun 6, 5:45 PM

Resolved

Jun 6, 11:45 PM

Coordinates

38.0035, -121.8355

Update History

1 observations

CHP : Disabled vehicle on CA-4 Westbound west of Somersville Rd (Antioch). Left lane affected. Expect delays. Jun 6, 5:45 PM

Source: 511_sfbay · ID 511.org/1504737 First seen Jun 6, 2026 5:45 PM