Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Eastbound exiting at Contra Loma Blvd (Antioch). Off Ramp blocked. Expect delays.

A high-severity accident was reported on CA-4 E near Contra Costa on September 11, 2026 at 3:04 PM.

Road

CA-4 E

Area

Contra Costa

Address

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Started

Sep 11, 8:04 AM

Last Updated

1 month, 2 weeks ago

Sep 11, 8:45 AM

Resolved

Sep 11, 3:00 PM

Coordinates

38.0002, -121.8248

Update History

1 observations

CHP : Traffic Hazard on CA-4 Eastbound exiting at Contra Loma Blvd (Antioch). Off Ramp blocked. Expect delays. Sep 11, 8:15 AM

Source: 511_sfbay · ID 511.org/1547916 First seen Sep 11, 2026 8:15 AM