Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Lane affected. Expect delays.

A high-severity accident was reported on CA-4 E near Contra Costa on May 18, 2026 at 12:26 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

May 17, 5:26 PM

Last Updated

1 week, 4 days ago

May 17, 6:00 PM

Resolved

May 18, 12:15 AM

Coordinates

37.9648, -121.7406

Update History

1 observations

CHP : Traffic Hazard on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Lane affected. Expect delays. May 17, 5:45 PM

Source: 511_sfbay · ID 511.org/1495856 First seen May 17, 2026 5:45 PM