Accident
High Severity
Active
CHP : Traffic Collision with Injuries on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Right lane blocked. Expect delays.
A high-severity accident was reported on CA-4 E near Contra Costa on June 11, 2026 at 12:42 AM.
Last Updated
2 minutes ago
Jun 10, 7:30 PM
Coordinates
37.9834, -121.7476
Update History
4 observations
CHP : Traffic Collision with Injuries on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Right lane blocked. Expect delays.
Jun 10, 7:15 PM
CHP : Traffic Collision with Injuries on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Right lane blocked. Expect delays.
Jun 10, 6:45 PM
CHP : Traffic Collision with Injuries on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Right lane blocked. Expect delays.
Jun 10, 6:30 PM
CHP : Traffic Collision with Injuries on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Right lane blocked. Expect delays.
Jun 10, 5:45 PM
Source: 511_sfbay · ID 511.org/1506508
First seen Jun 10, 2026 5:45 PM