Major Contract

Sydney Metro – Western Sydney Airport – Station Boxes and Tunnelling

Under Procurement
Sydney Metro – Western Sydney Airport – Station Boxes and Tunnelling

Formerly known as Sydney Metro Greater West, the Western Sydney Airport Line will see a new metro rail line run from St Marys on the existing T1 heavy rail line to the Western Sydney Aerotropolis near Bringelly, via Western Sydney Airport (WSA).

The Station Boxes and Tunnelling (SBT) Works for Sydney Metro – Western Sydney Airport project will involve the construction of two sections of twin tunnels between St Marys and Orchard Hills stations, and between the Western Sydney Airport Terminal and Aerotropolis stations. The tunnels would have a total combined length of approximately 10 kilometres, and include associated portal dive structures.

The line alignment includes stations to be located at:

  • St Marys
  • Orchard Hills
  • Luddenham
  • Airport Business Park
  • Airport Terminal, and
  • Western Sydney Aerotropolis.

The SBT Works will include station box excavations with temporary ground support at St Marys, Orchard Hills, Western Sydney Airport Terminal, Western Sydney Aerotropolis and potentially two intermediate service facilities, one in each of the tunnel sections.

Key Dates

Sep 2020 EOIs Open
Dec 2021 Expected Contract Award
Jul 2023 Expected Construction Commencement
Mar 2025 Expected Construction Completion


Procuring Agency: Sydney Metro
Shortlist: The three shortlisted bidders were Bouygues Construction Australia, John Holland Gamuda Joint Venture, and ACCIONA Construction Australia.
Procurement note:

The procurement is to be undertaken through a two stage process, with work to be awarded as Design and Construct contract.


Jun 2020 A scoping report was released, to supports the application to the NSW Minister for Planning and Public Spaces seeking the Secretary’s Environmental Assessment Requirements for the Environmental Impact Statement for the Western Sydney Airport line.
Sep 2020 The NSW Government invited registrations to begin the procurement for Station Boxes and Tunnelling works, with EOIs opened to the registrants from 18 September, closing on 30 October 2020. Separately, the NSW and Federal Governments announced the location of the six stations on the Western Sydney Airport line.
Oct 2020 The Environmental Impact Statement (EIS) for Western Sydney Airport Line was opened for public consultation, closing on 2 December 2020.
Mar 2021 The NSW Government shortlisted three consortia for the SBT component of the Project: Bouygues Construction Australia, a John Holland Gamuda Joint Venture, and Acciona Construction Australia. The NSW Government also announced that the contract is expected to be awarded by the end of 2021.
May 2021 Sydney Metro invited Expressions of Interest for Independent Certifier Services for the package, closing on 25 June.
Jul 2021 The NSW Government granted planning approval for the Sydney Metro - Western Sydney Airport Line.
Procurement approach
Traditional Procurement |
New South Wales | National |
Tender notices
Project pages
Western Sydney Airport