Accident High Severity Resolved

CHP : Grass fire on CA-4 Westbound exiting at Lone Tree Way Bypass (Antioch). Off Ramp affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on July 24, 2026 at 1:02 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Jul 24, 6:02 AM

Last Updated

3 days, 23 hours ago

Jul 24, 7:00 AM

Resolved

Jul 24, 1:15 PM

Coordinates

37.9618, -121.7425

Update History

2 observations

CHP : Grass fire on CA-4 Westbound exiting at Lone Tree Way Bypass (Antioch). Off Ramp affected. Expect delays. Jul 24, 7:00 AM

CHP : Grass fire on CA-4 Westbound exiting at Lone Tree Way Bypass (Antioch). Off Ramp affected. Expect delays. Jul 24, 6:30 AM

Source: 511_sfbay · ID 511.org/1525579 First seen Jul 24, 2026 6:30 AM