Accident High Severity Resolved

CHP : Traffic Hazard on CA-4 Westbound east of A St (Antioch). On Ramp affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on April 19, 2026 at 2:13 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Apr 19, 7:13 AM

Last Updated

1 month, 3 weeks ago

Apr 19, 7:15 AM

Resolved

Apr 19, 1:15 PM

Coordinates

37.9984, -121.8016

Update History

1 observations

CHP : Traffic Hazard on CA-4 Westbound east of A St (Antioch). On Ramp affected. Expect delays. Apr 19, 7:15 AM

Source: 511_sfbay · ID 511.org/1483290 First seen Apr 19, 2026 7:15 AM