Contractor Acciona Construction Australia has selected a joint venture of AECOM and Aurecon to perform detailed design work on its project to build a tunnel under Sydney Harbour, AECOM announced May 10.
Officials in Australia’s New South Wales state awarded a contract worth the equivalent of about $2.9 billion to Spain-based Acciona’s Australia business unit last December for design and construction of Stage 2 of the Western Harbour Tunnel project. The 4-mile tunnel would provide a bypass of the Sydney central business district, with the goal of cutting traffic congestion and travel times. The tunnel would include three lanes in each direction.