The WestConnex Motorway ranked among the largest infrastructure projects by deal size globally in 2018, latest Preqin data shows. : The WestConnex Motorway ranked among the largest infrastructure projects by deal size globally in 2018, latest Preqin data shows. Backed by the Abu Dhabi Investment Authority and a consortium that includes AustralianSuper and Transurban, the $9.26 billion WestConnex project was billed the fourth largest deal in Preqin's annual list. The consortium owns 51% of WestConnex, which will upgrade major roads and motorways around Parramatta, Homebush, Rozelle and Haberfield.