Accident
High Severity
Resolved
CHP : Severe traffic alert and Traffic Collision on CA-4 Eastbound west of Cummings Skwy (Port Costa). Right lane blocked. Expect delays.
A high-severity accident was reported on CA-4 E near Contra Costa on April 13, 2026 at 10:03 PM.
Last Updated
1 week, 2 days ago
Apr 13, 4:30 PM
Resolved
Apr 13, 10:30 PM
Coordinates
38.0116, -122.1990
Update History
2 observations
CHP : Severe traffic alert and Traffic Collision on CA-4 Eastbound west of Cummings Skwy (Port Costa). Right lane blocked. Expect delays.
Apr 13, 4:30 PM
CHP : Severe traffic alert and Traffic Collision on CA-4 Eastbound west of Cummings Skwy (Port Costa). Right lane blocked. Expect delays.
Apr 13, 3:30 PM
Source: 511_sfbay · ID 511.org/1480882
First seen Apr 13, 2026 3:30 PM