Accident
High Severity
Resolved
CHP : Traffic Collision on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Left lane blocked. Expect delays.
A high-severity accident was reported on CA-4 E near Contra Costa on May 24, 2026 at 1:43 PM.
Last Updated
1 day ago
May 24, 7:30 AM
Coordinates
37.9648, -121.7406
Update History
3 observations
CHP : Traffic Collision on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Left lane blocked. Expect delays.
May 24, 6:45 AM
CHP : Traffic Collision on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Left lane blocked. Expect delays.
May 24, 6:30 AM
CHP : Traffic Collision on CA-4 Eastbound west of Lone Tree Way Bypass (Antioch). Left lane blocked. Expect delays.
May 24, 6:15 AM
Source: 511_sfbay · ID 511.org/1498883
First seen May 24, 2026 6:15 AM