Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound at Balfour Rd (Antioch). Right lane blocked. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on July 4, 2026 at 9:52 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 4, 2:52 PM

Last Updated

3 weeks, 4 days ago

Jul 4, 3:45 PM

Resolved

Jul 4, 9:45 PM

Coordinates

37.9204, -121.7322

Update History

2 observations

CHP : Traffic Hazard on CA-4 Westbound at Balfour Rd (Antioch). Right lane blocked. Expect delays. Jul 4, 3:15 PM

CHP : Traffic Hazard on CA-4 Westbound at Balfour Rd (Antioch). Right lane blocked. Expect delays. Jul 4, 3:00 PM

Source: 511_sfbay · ID 511.org/1516771 First seen Jul 4, 2026 3:00 PM