Case Study

West Gate Tunnel Project – Utilities

  • ClientCPB Contractors
  • StartJanuary 2019
  • Value$800m+
  • CompleteJune 2020

Widening the West Gate Freeway from 8 to 12 lanes, 6.8km of tunnelling, a bridge over the Maribyrnong River, and 14km of new and improved cycling and walking paths.

Doing 'it' better

All utility relocation designs completed to tight deadlines, a critical step in enabling permanent works

FSC ScopeExpand+

  • Managing the design process for numerous electrical, gas, water and communications utility relocations in the project’s West Zone
  • Overseeing the designs for relocating 220kV and 22kV/66kV circuits


  • Congested utility easements
  • Working with construction management team, designers, client and asset owners
  • Developing effective utility relocation designs while fulfilling complex design management processes and industry standards
  • Waterways
  • Soil contamination
  • Stringent stakeholder requirements


  • Helping develop a BIM model for relocating Jemena overhead 22kV and 66kV high voltage circuits near the West Gate Bridge, using 2D drawings of the existing assets
  • Using the 3D model to demonstrate that the utilities could be suspended overhead at Stony Creek rather than bored, simplifying construction and saving the client $6m
  • Safety in Design undertaken prior to preliminary design issue to capture all relevant safety controls and mitigate potential redesign


  • All utility relocation designs were completed to the tight deadlines – a critical step in enabling permanent works
  • To meet timelines and reduce the number of re-designs, the team produced design alignments in-house instead of relying on the utility providers. This allowed relocation designs for Ausnet’s 220kV HV assets to be completed in just 3 months, after having previously been stuck in preliminary design for a year.


  • Safety: 0 Lost Time Injuries
  • Program: All designs were Issued for Construction at least 10 days prior to construction commencing

FSC StaffExpand+

  • Adrian Khor – Design Manager
  • Alex Malesevic – Utilities Design Coordinator
  • James Rodgers – Utilities Design Coordinator
  • Jacob Ostwald – BIM Coordinator – Utilities

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