The business case is for a 27-kilometre four-lane grade-separated dual carriageway road at the outer edge of Bunbury. It would connect the Bussell Highway, north of Bunbury, to the Forrest Highway in the south. It aims to separate regional and port freight traffic from local traffic in order to improve travel times, freight efficiency, and road safety and amenity.

The business case was accepted for Infrastructure Australia's assessment on 25 August 2020.

On 8 December 2020, the Bunbury Outer Ring Road was added to the Infrastructure Priority List as a Priority Project.