The table below shows the Stage 3 proposals that Infrastructure Australia has previously evaluated.
For each proposal, we publish a summary of our evaluation, which you can access in the table below. This outlines our assessment of the strategic fit of the proposal, the costs and benefits the proposal offers for Australians, and the deliverability of the proposal.
To see the proposals we have positively evaluated as nationally significant priorities for Australia, explore the Infrastructure Priority List.
A number of business cases evaluated by Infrastructure Australia have been publicly released, view all available business cases.
This business case proposes an alternative freight access route to the Port of Albany. The project would involve a ring road around the urban areas of Albany, which aims to improve freight efficiency and help separate freight, local and tourist traffic within Albany.
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 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.
The business case is for removing six level crossings on the inner Armadale Line. The project aims to improve safety and reduce congestion at the level crossings, as well as improving station precincts and public open space.
The business case is to extend the Armadale Line approximately eight kilometres south to Byford. This is to support and provide public transport access to the high-growth suburb of Byford.
The business case was accepted for Infrastructure Australia's evaluation on 14 July 2020.
The business case is for upgrading existing signalling and control systems on the Perth rail network to an integrated high-capacity signalling system, enabling more trains and improved reliability.
The business case is for the construction of a new 21km rail line between Bayswater and Ellenbrook, to provide rapid transit access for communities, workers and tourists in this area.