Skip to main content

CPB Contractors closes deal for Melbourne’s West Gate Tunnel

CPB Contractors has achieved contractual close on Melbourne’s planned 5km West Gate Tunnel, originally called the Western Distributor. The road will link the West Gate Freeway at Yarraville, a suburb of Melbourne, with the tolled CityLink road network at Docklands via a tunnel beneath Yarraville.
December 13, 2017 Read time: 2 mins
The planned Westgate Tunnel: taking the pressure off the Westgate Bridge (photo courtesy CPB Contractors/Victoria Government)
CPB Contractors has achieved contractual close on Melbourne’s planned 5km West Gate Tunnel, originally called the Western Distributor.


The road will link the West Gate Freeway at Yarraville, a suburb of Melbourne, with the tolled CityLink road network at Docklands via a tunnel beneath Yarraville.

CPB Contractors is the CIMIC group’s construction arm that employs around 23,000 people in Australia, New Zealand, Papua New Guinea and Asia, including India. The company consists of the former 2685 Leighton Contractors and 2642 Thiess.

CPB was selected by 891 Transurban and the government of Victoria state as the preferred contractor for the project in April. CPB operates in a 50:50 joint venture with 4755 John Holland.

CPB will be working with main contractor Transurban which has a public-private partnership with the Victoria government.

The design and construct contract will generate revenue to CPB Contractors of around US$1.9 billion, according to CPB.

Transurban will contribute US$3.02 billion to the project, in exchange for motorists paying tolls on CityLink until 2045, according to a report by Australia’s ABC News.

Major construction is expected to start early next year for the project to open in 2022.

The West Gate Tunnel, one of the state’s largest urban road projects, will be an alternative route to the West Gate Bridge.

Design and construction work include widening the West Gate Freeway from eight lanes to 12 between the M80 Ring Road and Williamstown Road, as well as construction of a 2.8km eastbound tunnel and 4km westbound tunnel under Yarraville. A bridge over the Maribyrnong River will be built and an elevated road along Footscray Road to the Port of Melbourne, CityLink and the city’s north.

Cycling and pedestrian paths are part of the contract.

The Victoria State Government said the final design approved for construction will cost just over US$5 million because the tunnels are twice as long as proposed in the original business case. There will also be additional noise abatement walls, larger open spaces and more cycling paths. Also, air-quality monitoring will be for 10 years.

“Construction of the new road tunnel will be partly funded with a ten-year extension of the CityLink Concession deed,” the government said. “Early works will start in January, with the first of two massive tunnel boring machines to be ordered in the next few weeks.”

For more information on companies in this article

Related Content

  • Major Australian tunnel contract has been awarded
    October 29, 2021
    A major Australian tunnel contract has been awarded to a consortium.
  • Major investment in Australia’s transport infrastructure
    June 5, 2015
    A joint venture featuring John Holland, Samsung C&T and Leighton Contractors (Leighton) has secured a deal to build and design Sydney’s M4 East motorway. The M4 East forms part of a project to build the WestConnex road tunnel, completion of which is expected in 2023. The M4 East is planned to be ready in 2019, while the WestConnex road tunnel is the biggest transport infrastructure of its kind in Australia. The deal won by the joint venture partners is valued at US$2.1 billion. The WestConnex project is pla
  • New South Wales is seeking financial packers for WestConnex in Sydney
    June 19, 2015
    Investment bank Goldman Sachs will soon be sending out expressions of interest for backers to finance Australia’s biggest road deal, the three-stage WestConnex project to be rollout by the New South Wales government. According to a report by The Australian newspaper, initially around US$1.17 billion will be needed for the first phase of the Sydney toll road project. The first phase will likely cost between nearly $2.35 billion and $3.9 billion. Total cost of all three phases over 10 years could be as
  • UGL wins Australia’s NorthConnex M&E services contract
    September 7, 2015
    Engineering services provider UGL has signed a four-year deal with the Lend Lease Bouygues joint venture that is building the NorthConnex motorway in Sydney, Australia. The US$329 million contract is for the design, procurement, construction and commissioning of the electrical, mechanical, communication, fire and control systems needed for the project’s 9km twinned tolled tunnel. UGL provides outsourced engineering, asset management and maintenance services to rail, transport, power, resources, water an