Preserve corridor for Western Sydney Airport rail connection

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Future rail connection to Western Sydney Airport
High Priority Initiative
Infrastructure Category
Corridor Preservation
Proposed By
NSW Government
Near term (0-5 years)
Western Sydney, NSW
Preserve corridor for Western Sydney Airport rail connection


Over the next two decades, the population of Western Sydney will increase by 900,000 people. Around half of all Sydney Basin residents are expected to be living in the region within 25 years. Preliminary analysis indicates that passenger demand at Western Sydney Airport could reach 10 million per year within five years from commencement of operations in the mid-2020s.

Provision of efficient transport options connecting Western Sydney Airport with other key hubs – such as the Sydney CBD, Parramatta, Western Sydney Employment Area, and North West and South West priority growth areas – is critical to avoid unnecessary travel delays and enable sustained economic growth.

Modelling by Infrastructure Australia in 2017 estimates the net cost of protecting and acquiring an indicative corridor from St Marys to the Western Sydney Airport, then to Macarthur and Leppington, as $0.3 billion (2016 prices) using a 7% real discount rate.

Proposed initiative

Identify and preserve rail corridors connecting the Western Sydney Airport with the Sydney rail network.

The Australian Government and New South Wales Government jointly released a scoping study that considered six options for rail services to the Western Sydney Airport. Three options have subsequently been shortlisted as part of a longer-term rail network for Western Sydney:

  • a north–south line between Schofields and Macarthur via the airport
  • an extension of the South West Rail Link
  • an east–west line between the Western Sydney Airport and Parramatta. 

The Australian Government and New South Wales Government are jointly funding a business case for the north–south line to service Western Sydney Airport and the Western Parkland City. This would support growth in Western Sydney, including the new airport, by providing a transport link that can shape growth while providing fast and efficient transport accessibility.

A medium-term Priority Initiative for Western Sydney Airport public transport connection is separately included on the Infrastructure Priority List.

Next steps

Proponent to identify initiatives and develop options (Stage 2 of Infrastructure Australia’s Assessment Framework).