Crows Nest Metro is an Incredibly complex project, it could be described as bridge building in a 
hole. Sydney Metro had undertaken a detailed construction methodology study to determine the 
most efficient way to construct the station.
Two elements detailed in this project were implemented during the installation strategies for 
the over track exhaust (OTE) and large steel trusses that span the station box. The over
track exhaust is a structural steel and precast concrete suspended structure that sits directly 
above the trackway to ventilate the tunnels. This structure is suspended from the floor above.
The concrete superstructure at Crows Nest Metro changes to a hybrid structural steel and concrete framed building. Through detailed planning and engagement with our supply partners the team were able to develop a solution where the trusses could be fully assembled off site and delivered to the site in a single piece. This would minimise the amount of site work and safety risk that would otherwise have arisen from conducting these assembly works on site. Safety in design right there, eliminating hazards and reducing risk before your feet hit the ground.