The business case is to build a new Armadale Road Bridge over the Kwinana Freeway, which would connect North Lake Road to Armadale Road in the Cockburn Central area. It aims to resolve current bottlenecks, improve travel times, and improve amenity and liveability within the area.

The business case was accepted for Infrastructure Australia's assessment on 14 July 2020.

On 8 December 2020, the Armadale Road bridge was added to the Infrastructure Priority List as a Priority Project.

This evaluation was completed before the raising of the threshold for an Infrastructure Australia assessment from $100 million to $250 million of Commonwealth funding being sought.