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.
The Western Harbour Tunnel proposal involves the construction of a motorway crossing underneath Sydney Harbour, connecting WestConnex with the Warringah Freeway.
The Newcastle Inner City Bypass – Rankin Park to Jesmond project involves the construction of a 3.4 km section of the Newcastle Inner City Bypass. Bypassing the existing route is intended to reduce congestion and travel times, and improve road safety.
The business case is to upgrade the Prospect Highway between Reservoir Road at Prospect and 200 metres north of St Martins Crescent, Blacktown (approximately 3.6 kilometres).
The business case is for a new 16-kilometre motorway to connect the Western Sydney International Airport at Badgerys Creek with Sydney’s motorway network.
More Trains, More Services is a program of staged investments that will progressively transform Sydney’s rail network into a modern and reliable mass transit system using world-class digital technology.
The proposal comprises the duplication of the remaining single-track section of the Port Botany Rail Line, and delivery of a new passing loop on the Southern Sydney Freight Line, to increase capacity, efficiency and reliability.