Accident
Moderate Severity
Stale
CHP : Traffic Collision on CA-4 Eastbound east of Discovery Bay Blvd (Discovery Bay). Lanes blocked. Expect delays.
A injury accident was reported on CA-4 E near Contra Costa on July 31, 2026 at 1:50 AM.
Last Updated
5 hours, 49 minutes ago
Jul 30, 7:45 PM
Coordinates
37.8901, -121.6023
Update History
3 observations
CHP : Traffic Collision on CA-4 Eastbound east of Discovery Bay Blvd (Discovery Bay). Lanes blocked. Expect delays.
Jul 30, 7:00 PM
CHP : Traffic Collision on CA-4 Eastbound east of Discovery Bay Blvd (Discovery Bay). Lanes blocked. Expect delays.
Jul 30, 6:30 PM
CHP : Traffic Collision on CA-4 Eastbound east of Discovery Bay Blvd (Discovery Bay). Lane affected. Expect delays.
Jul 30, 6:15 PM
Source: 511_sfbay · ID 511.org/1528727
First seen Jul 30, 2026 6:15 PM