Accident
Moderate Severity
Stale
CHP : Severe traffic alert and Traffic Collision with Injuries on CA-4 Westbound between I-680 N (Martinez) and Arnold Industrial Way (Concord). All lanes blocked. Avoid the area.
A injury accident was reported on CA-4 W near Contra Costa on November 6, 2026 at 1:04 AM.
Last Updated
59 minutes ago
Nov 5, 5:30 PM
Coordinates
37.9966, -122.0644
Update History
2 observations
CHP : Severe traffic alert and Traffic Collision with Injuries on CA-4 Westbound between I-680 N (Martinez) and Arnold Industrial Way (Concord). All lanes blocked. Avoid the area.
Nov 5, 5:30 PM
CHP : Disabled vehicle on CA-4 Westbound east of I-680 N (Martinez). Lanes blocked. Expect delays.
Nov 5, 5:15 PM
Source: 511_sfbay · ID 511.org/1573575
First seen Nov 5, 2026 5:15 PM