The project is particularly complex because of the extensive works taking place within a live station environment with more than 270,000 people using the station every day.
To allow the completion of the major tunnelling work required to build the new metro platforms on time, Aurecon, working with our design partners and Laing O’Rourke developed a “top down” approach whereby the top level is constructed first and then used as a working platform to support logistics for the deep excavation beneath. The technical challenge around this has been to safely and adequately transfer the load from temporary plunge columns supporting the top level into the new permanent structure once excavation is complete.
Early and enabling works for Central Station Metro have been underway since March 2018. Central Walk and the new escalators from Platforms 12 to 23 will be open in late 2022, with the new metro platforms to become operational once Sydney Metro City & Southwest services begin in 2024.
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