Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). 2nd lane from the left affected. Expect delays.

A high-severity accident was reported on CA-4 E near Contra Costa on September 3, 2026 at 10:55 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Sep 3, 3:55 AM

Last Updated

1 month, 3 weeks ago

Sep 3, 5:30 AM

Resolved

Sep 3, 11:45 AM

Coordinates

37.9572, -121.7449

Update History

2 observations

CHP : Traffic Hazard on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). 2nd lane from the left affected. Expect delays. Sep 3, 5:15 AM

CHP : Disabled vehicle on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Lane affected. Expect delays. Sep 3, 4:00 AM

Source: 511_sfbay · ID 511.org/1544604 First seen Sep 3, 2026 4:00 AM