Wedoany.com Report-Jun 13, Multiplex has completed the terminal building for Western Sydney International (WSI), Australia’s newest airport, located in Badgery’s Creek, approximately 40km west of Sydney’s central business district. Set to open in late 2026, WSI is described as Australia’s first new airport in over a century. The terminal, based on a concept design by Zaha Hadid Architects and Cox Architecture, was finalized by Multiplex and Woods Bagot.

The airport is projected to initially accommodate 10 million passengers annually, with plans to expand to 82 million by around 2060 through three additional development phases. Construction of the terminal spanned nearly four years, employing up to 2,000 workers at its peak, with over 50% from western Sydney. Multiplex utilized a locally produced composite steel frame, Slimdeck 210, for the upper floors, reducing labor and material needs. A prefabricated service riser system enabled rapid core installations, and the terminal roof features 6,000 solar panels.

Multiplex collaborated with Airbiz and Woods Bagot on the terminal design and infrastructure, coordinating construction planning with on-site work. A joint venture of Acciona and CPB Contractors handled airside civil and pavement works, while BMD Constructions and Seymour Whyte Construction managed landside civil works, including carparks, roads, bridges, and utilities. Aurecon provided engineering design services for the terminal precinct since 2019, and an Aurecon-Arcadis joint venture designed major earthworks and airfields.

Simon Hickey, WSI’s chief executive: “WSI will give our global city a 24-hour international gateway that will continue to create significant economic opportunities for all of Greater Sydney.” David Ghannoum, Multiplex’s NSW managing director: “This is a once-in-a-lifetime project.”

Approved by the Australian government in 2016 after decades of debate, WSI addresses capacity constraints at Sydney’s existing eastern airport, which cannot expand due to surrounding suburbs. The Badgery’s Creek site was first proposed in 1946. In January 2025, state and local governments allocated US$620 million (A$1 billion) for a transit corridor connecting the airport to Liverpool, enhancing regional accessibility.

The project is poised to deliver a modern, efficient airport experience, boosting economic growth in Greater Sydney.