THREE of the four tunnel boring machines (TBMs) deployed on the construction of the 23km Western Sydney Airport Line from St Marys to Bradfield have now completed their drives, with a final 230m section at St Marys expected to be completed this summer.

Tunnelling is now reaching its close after 13 months of work. The TBMs have worked around the clock up to seven days a week to excavate more than 1.4 million tonnes of material and install 68,360 concrete tunnel lining segments.

Work inside the tunnels has already started and involves completing the construction of 39 cross-passages and preparing for tracklaying.

Meanwhile, the main focus of the project switches to the construction of the six new Sydney Metro stations at St Marys, Orchard Hills, Luddenham, Airport Business Park, Airport Terminal and Bradfield.

Construction is underway at St Marys, while work is due to start at Orchard Hills, Luddenham and Bradfield later this year.

The Sydney Metro Western Sydney Airport project is jointly funded by the federal and New South Wales (NSW) governments. It is due to open in late 2026 when Sydney’s new international airport enters service.

“Sydney Metro and the new Western Sydney airport will transform Western Sydney into a global economic hub,” says the prime minister of Australia, Mr Anthony Albanese.

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