Accident Resolved

CHP : Residual delays on CA-4 Eastbound west of Somersville Rd (Antioch). All lanes open. Expect delays.

A accident was reported on CA-4 E near Contra Costa on July 17, 2026 at 12:39 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Jul 17, 5:39 AM

Last Updated

3 months, 1 week ago

Jul 17, 6:15 AM

Resolved

Jul 17, 12:15 PM

Coordinates

38.0035, -121.8364

Update History

4 observations

CHP : Residual delays on CA-4 Eastbound west of Somersville Rd (Antioch). All lanes open. Expect delays. Jul 17, 6:15 AM

CHP : Traffic Collision on CA-4 Eastbound west of Somersville Rd (Antioch). Center lanes blocked. Expect delays. Jul 17, 6:00 AM

CHP : Traffic Collision on CA-4 Eastbound west of Somersville Rd (Antioch). Center lanes blocked. Expect delays. Jul 17, 5:45 AM

CHP : Traffic Collision on CA-4 Eastbound west of Somersville Rd (Antioch). Center Divider blocked. Expect delays. Jul 17, 5:30 AM

Source: 511_sfbay · ID 511.org/1522367 First seen Jul 17, 2026 5:30 AM