West Gate Tunnel

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Project Details

The West Gate Tunnel Project worth $2.7 billion is a partnership between the Victorian Government and Transurban. will be built by construction contractors CPB Contractors and John Holland (CPBJH JV) and will deliver a vital alternative to the West Gate Bridge. It will provide a much-needed second river crossing, quicker and safer journeys, and remove thousands of trucks from residential streets 

Our Role

CaSE & Pike Design was awarded several bridge engineering and temporary works packages for this project. The project includes a bridge over the Maribyrnong River to connect the tunnels with an elevated road above Footscray Road, ramps to the port at MacKenzie Road and Appleton Dock Road for direct freeway access and elevated roadway connecting to CityLink, Dynon Road, and Footscray Road, running above the centre of Footscray Road.

As well as temporary works design, CaSE scope includes the analysis of more than 100 girders of the steel composite bridge structure using MIDAS Civil software to analyse stage deflections, optimize lifting and construction methodology, and ensure the stability of the structure in all temporary stages while the bridge is being built.

Output includes:

  • Deflections during erection
  • Lifting design for girders
  • Reactions for temporary works design
  • Reactions for modifications of Permanent works
Victoria, AU
Project Value
AUD 6.7B
CPB Contractors John Holland JV
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  • Review of construction methodology
  • Stage by Stage Analyses of Steel girders during various stages of construction
  • Design of temporary works to support steel girders in their temporary condition and ensure stability
  • Permanent Work constructability review
  • Design of falsework and formwork for precast segmental portals
  • Design check for jacking and transport of segmental portals
  • Shop drawings for steel girders combining permanent and temporary works
  • Design Management
  • The interface between designer, Contractor, IV
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