CIMIC Group company CPB Contractors, as part of a joint venture, has been selected by the NSW Government to deliver the western section of the M12 Motorway. The contract, funded by the Australian and New South Wales governments, will generate revenue of approximately $245 million for CPB Contactors. The joint venture is made up of CPB Contractors and the Georgiou Group.

The M12 Motorway will provide direct access to the new Western Sydney International (Nancy-Bird Walton) Airport and connect the airport to Sydney's motorway network. The M12 is an east-west motorway, running between the M7 Motorway at Cecil Hills and The Northern Road at Luddenham, and is being delivered in three sections. The western section package involves the construction of 6.1 kilometers of motorway including 11 bridges.

Work will commence this year and is scheduled to be completed in late 2025.