Accident High Severity Resolved

CHP : Traffic Collision on CA-4 Westbound ramp to CA-160 (Antioch). Connector ramp affected. Expect delays.

A high-severity accident was reported on CA-4 W near Contra Costa on May 19, 2026 at 3:09 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

May 19, 8:09 AM

Last Updated

1 week, 3 days ago

May 19, 8:15 AM

Resolved

May 19, 2:15 PM

Coordinates

37.9952, -121.7559

Update History

1 observations

CHP : Traffic Collision on CA-4 Westbound ramp to CA-160 (Antioch). Connector ramp affected. Expect delays. May 19, 8:15 AM

Source: 511_sfbay · ID 511.org/1496563 First seen May 19, 2026 8:15 AM