Accident High Severity Active

CHP : Traffic Collision 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 April 26, 2026 at 10:12 AM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Apr 26, 3:12 AM

Last Updated

5 minutes ago

Apr 26, 3:45 AM

Coordinates

37.9572, -121.7449

Update History

4 observations

CHP : Traffic Collision on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Lane affected. Expect delays. Apr 26, 3:15 AM

CHP : Traffic Collision on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Lane affected. Expect delays. Apr 26, 3:00 AM

CHP : Traffic Collision on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Lane affected. Expect delays. Apr 26, 2:45 AM

CHP : Traffic Collision on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Lane affected. Expect delays. Apr 26, 2:30 AM

Source: 511_sfbay · ID 511.org/1486235 First seen Apr 26, 2026 2:30 AM