Accident Moderate Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound west of Lone Tree Way Bypass (Antioch). Lane affected. Expect delays.

A injury accident was reported on CA-4 W near Contra Costa on April 9, 2026 at 3:41 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Apr 9, 8:41 AM

Last Updated

6 months, 2 weeks ago

Apr 9, 8:45 AM

Resolved

Apr 9, 3:00 PM

Coordinates

37.9554, -121.7444

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound west of Lone Tree Way Bypass (Antioch). Lane affected. Expect delays. Apr 9, 8:45 AM

Source: 511_sfbay · ID 511.org/1478875 First seen Apr 9, 2026 8:45 AM