Accident Resolved

CHP : Severe traffic alert and Traffic Collision with Injuries on CA-4 Westbound exiting at Hillcrest Ave (Antioch). All lanes closed. Expect delays.

A accident was reported on CA-4 W near Contra Costa on September 15, 2026 at 8:08 PM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

Sep 15, 1:08 PM

Last Updated

1 month, 1 week ago

Sep 15, 3:00 PM

Resolved

Sep 15, 9:15 PM

Coordinates

37.9958, -121.7811

Update History

2 observations

CHP : Severe traffic alert and Traffic Collision with Injuries on CA-4 Westbound exiting at Hillcrest Ave (Antioch). All lanes closed. Expect delays. Sep 15, 2:45 PM

CHP : Severe traffic alert and Traffic Collision with Injuries on CA-4 Westbound exiting at Hillcrest Ave (Antioch). All lanes closed. Expect delays. Sep 15, 2:00 PM

Source: 511_sfbay · ID 511.org/1549741 First seen Sep 15, 2026 2:00 PM

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