Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of San Jose Ave (Antioch). Right lane affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on May 22, 2026 at 1:42 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

May 22, 6:42 AM

Last Updated

3 days, 7 hours ago

May 22, 6:45 AM

Resolved

May 22, 12:45 PM

Coordinates

37.9407, -121.7400

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of San Jose Ave (Antioch). Right lane affected. Expect delays. May 22, 6:45 AM

Source: 511_sfbay · ID 511.org/1498175 First seen May 22, 2026 6:45 AM