Raj Ramgobin scaled


Tetra Tech Coffey offers innovation and expertise to deliver the tunnels that support our modern cities.  

Tunnels play a critical role in the expansion and evolution of our transport infrastructure, helping to create greater efficiencies in our cities and communities.  

Often built in challenging and sensitive environmentsthrough unexpected geotechnical conditions, tunneling presents significant engineering challenges which require specialist expertise. 

Our team of tunneling experts have worked extensively on delivering highly complex, large-scale projects that demonstrate innovation and technical excellence, as well as cost effective and practical solutions for our clients. The depth of our tunneling experience means we can successfully design and deliver tunnels and tunnel systems in complex environments. 

Our strength lies in our ability to deliver a combined service offering, including project management; detailed geological, geotechnical, and hydrogeological investigation; and design and construction oversight

This support is further enabled our wide range of experts, including project managers, engineers, transport planners, designers, environment experts, hazardous material experts, and more.  

The projects we have worked on range from major tunnel projects like the Lane Cove tunnel and WestConnex project in Sydney, Australia, and the EastLink and Melbourne Metro tunnels in Melbourne, Australia. 

Outunneling services include: 

  • Geotechnical services 
  • Rock and soft soils assessments 
  • Specialist design 
  • Foundation and excavation support 
  • Retention systems and temporary works design 
  • Ground water management 
  • Transport planning 

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