We have the technical and organizational know-how, as well as years of comprehensive experience relating to the construction of tunnels, shafts, deep basements and caverns, both nationally and internationally.

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Our complete design-and-build services include:

  • Road tunnels
  • Rail tunnels
  • Urban metro / underground tunnels
  • Utility tunnels

We undertake all forms of tunneling in all types of ground conditions - from drill-and-blast methods in hard rock, to EPB tunneling in New York City. We also specialize in associated shaft construction of all sizes and types, using a variety of in-house techniques including secant pile, diaphragm-wall, as well as traditional jacking and underpinning methods.