Accident Moderate Severity Resolved

CHP : Traffic Collision on CA-4 Westbound east of Somersville Rd (Antioch). Lane closed. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on July 14, 2026 at 5:45 PM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

Jul 14, 10:45 AM

Last Updated

2 weeks, 1 day ago

Jul 14, 11:00 AM

Resolved

Jul 14, 5:15 PM

Coordinates

38.0035, -121.8355

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound east of Somersville Rd (Antioch). Lane closed. Expect delays. Jul 14, 11:00 AM

Source: 511_sfbay · ID 511.org/1520871 First seen Jul 14, 2026 11:00 AM