Accident High Severity Stale

CHP : Grass fire on CA-4 Westbound entering at L St (Antioch). On Ramp affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on August 26, 2026 at 12:42 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Aug 25, 5:42 PM

Last Updated

4 hours, 37 minutes ago

Aug 25, 6:30 PM

Coordinates

38.0009, -121.8262

Update History

2 observations

CHP : Grass fire on CA-4 Westbound entering at L St (Antioch). On Ramp affected. Expect delays. Aug 25, 6:30 PM

CHP : Grass fire on CA-4 Westbound entering at L St (Antioch). On Ramp affected. Expect delays. Aug 25, 5:45 PM

Source: 511_sfbay · ID 511.org/1540709 First seen Aug 25, 2026 5:45 PM