Tunnel Structures

Selecting safe, innovative, and cost-effective construction methods for underground projects is crucial, and ILF’s commitment to excellence ensures that we go above and beyond to provide technical expertise and extensive experience to help clients find the optimal tunneling solution.
With proficiency in all tunnel construction methods like NATM, TBM, and Cut & Cover, we offer tailored design and construction management services, making us the trusted partner for expert guidance in underground construction projects.

Fields of Expertise:

• Metro Tunnels
• Railway Tunnels
• Road Tunnels
• Water Tunnels, Utility Tunnels and Special Tunnel Projects

Metro Tunnels

Constructing tunnels in city environments, in difficult soil conditions, beneath ground water and residential areas , poses many challenges, for instance related to logistics, settlement, and protection of neighbours.
The ILF team is experienced in balancing the various, often conflicting, influences to achieve optimal design solutions. This includes the design of inner-city tunnel projects for trams and metros as well as for light rail systems and railways, involving major stations that have been built using both cut-and-cover and underground construction methods.

Railway Tunnels

ILF excels in designing and implementing all types of rail tunnel projects, with expertise in supporting design speeds of up to 330 km/h. Our core competencies include the construction of new railway tunnels and the renewal and rehabilitation of existing ones, some of which are over 100 years old. A close cooperation with rail tunnel operators ensures that operational requirements like safety and maintainability are systematically considered in all our design solutions. Trust ILF for expert solutions in high-speed rail tunnel design and renovation services.

Road Tunnels

Since the 1970s, ILF has been a key player in road tunnel projects, starting with the Arlberg Tunnel, Austria’s longest road tunnel. Today, tunneling is a core focus for ILF.
We offer a comprehensive suite of services for road tunnel projects, spanning various types from mountain tunnels with complex geology and high overburden, to bypass tunnels and inner-city road tunnels. Our expertise encompasses civil engineering, tunnel safety, and equipment design, ensuring comprehensive solutions for our clients.

Water Tunnels, Utility Tunnels and Special Tunnel Projects

ILF offers comprehensive tunnel design services for many different types of tunnels, encompassing caverns and tunnels for pumped storage hydropower plants , cable routing, water conveyance, and specialized projects like CERN’s Future Circular Collider (FCC) particle accelerator.
Our collaborative approach, combining ILF-tunnel specialists with our experts in hydropower, pipelines, and power transmission, ensures tailored solutions that benefit clients seeking non-traffic tunnel designs.