Accident
Moderate Severity
Stale
CHP : Traffic Collision on CA-4 Eastbound west of Arnold Industrial Pl (Concord). Center lanes blocked. Expect delays.
A injury accident was reported on CA-4 E near Contra Costa on November 1, 2026 at 12:20 PM.
Last Updated
2 hours, 49 minutes ago
Nov 1, 6:30 AM
Coordinates
38.0023, -122.0472
Update History
3 observations
CHP : Traffic Collision on CA-4 Eastbound west of Arnold Industrial Pl (Concord). Center lanes blocked. Expect delays.
Nov 1, 4:30 AM
CHP : Traffic Collision on CA-4 Eastbound west of Arnold Industrial Pl (Concord). Center lanes blocked. Expect delays.
Nov 1, 4:00 AM
CHP : Traffic Collision on CA-4 Eastbound west of Arnold Industrial Pl (Concord). Center lanes affected. Expect delays.
Nov 1, 3:45 AM
Source: 511_sfbay · ID 511.org/1571465
First seen Nov 1, 2026 3:45 AM