The SA Government has awarded Parsons Brinkerhoff and Wallbridge & Gilbert the planning and environmental studies contract for the $445 million duplication of the Southern Expressway.
Macmahon Holdings Limited has been awarded a $74 million contract by Main Roads Western Australia for the design and construction of the Great Eastern Highway Roe Interchange Project.
Preliminary design and construction costing has been completed on the eastern section of the Hunter Expressway Project in NSW with the contract finalised at $825 million.