Accident Moderate Severity Resolved

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

A injury accident was reported on CA-4 W near Contra Costa on June 13, 2026 at 6:07 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jun 12, 11:07 PM

Last Updated

13 hours, 12 minutes ago

Jun 12, 11:30 PM

Resolved

Jun 13, 5:45 AM

Coordinates

38.0035, -121.8355

Update History

1 observations

CHP : Disabled vehicle on CA-4 Westbound west of Somersville Rd (Antioch). Right shoulder affected. Expect delays. Jun 12, 11:15 PM

Source: 511_sfbay · ID 511.org/1507759 First seen Jun 12, 2026 11:15 PM