Tunnels and caverns

Tunnels and caverns

The rapid development of our settlement areas and the protection of our environment make it necessary to build more traffic routes and industrial plants underground. This avoids impacts created by additional buildings and structures above ground.

A decisive factor for the success of a project is choosing a technically safe construction method and ensuring the greatest possible economic efficiency at the same time.

ILF has, for more than three decades, been entrusted with engineering services for outstanding projects. All in all ILF has been involved in the design and implementation of more than 1,000 km of tunnel structures.


Fields of expertise:

  • Road and railway tunnels
  • Water tunnels
  • Utility tunnels
  • Adits
  • Caverns and shafts

Niagara Tunnel Project

The Niagara Tunnel Project is a 10.2-km-long tunnel with an interior diameter of 12.7 m, which allows OPG to make better use of the available…

Future Circular Collider (CERN)

The Future Circular Collider (FCC) has been launched as a result of the recommendation made in the 2013 update of the European Strategy for Particle…

Brenner Base Tunnel (BBT)

The Brenner Base Tunnel (BBT) is a low-gradient railway tunnel that connects Austria and Italy. It runs from Innsbruck to Franzensfeste (55 km).

Gotthard Base Tunnel

The Gotthard Base Tunnel is a railway tunnel put in operation in 2016, running parallel to the mountain route of the Gotthard railway.
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Tunnels & Caverns (EN)