The joint venture partners will now work with Transurban and the Victorian Government through a process to assess the potential environmental, social, economic and planning impacts of the project, and recommend the approach to managing them.
Revenue to the contractors will be finalised at contract execution, following completion of the planning process. The value of the project has previously been put at AU$5.5bn (£3.2bn).
The team had been shortlisted in June last year along with two other bidders: Lendlease Engineering and Bouygues Construction; and Salini Impreglio, Fluor Australia and Lane Worldwide Infrastructure (link opens in new tab).
CPB Contractors managing director Román Garrido said: “Our team is focused on ensuring opportunities for local workers and businesses, providing a strategic and socially-inclusive procurement programme, and value for money urban designs that deliver enhanced benefits to communities and stakeholders.”
Design and construction works include widening the West Gate Freeway from eight lanes to 12 between the M80 Ring Road and Williamstown Road, as well as building a 2.8km eastbound tunnel and 4km westbound tunnel under Yarraville. There will also be a new bridge over the Maribyrnong River providing an alternative to the West Gate Bridge, an elevated road along Footscray Road to the Port of Melbourne, CityLink and the city’s north, and major new cycling and pedestrian paths.
Subject to planning approvals, construction is expected to start in 2018 with the project scheduled to open to traffic in 2022.