Accident Moderate Severity Resolved

CHP : Disabled vehicle on CA-4 Westbound west of Somersville Rd (Antioch). Lane blocked. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on May 10, 2026 at 4:06 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

May 9, 9:06 PM

Last Updated

5 months, 2 weeks ago

May 9, 9:15 PM

Resolved

May 10, 3:15 AM

Coordinates

38.0035, -121.8355

Update History

2 observations

CHP : Disabled vehicle on CA-4 Westbound west of Somersville Rd (Antioch). Lane blocked. Expect delays. May 9, 9:15 PM

CHP : Disabled vehicle on CA-4 Westbound east of Somersville Rd (Antioch). Lane blocked. Expect delays. May 9, 8:30 PM

Source: 511_sfbay · ID 511.org/1492524 First seen May 9, 2026 8:30 PM