dcsimg Tunnel engineering - Ramboll UK Limited

Tunnel engineering

Tunnels connect people with places and services. Ramboll’s skilled team of Tunnelling Engineers work on micro to macro scale projects worldwide. We offer multidisciplinary services with unparalleled knowledge of immersed tube tunnels (IMT) and hard rock tunnels. Our expertise encompasses tunnels for metro systems, railways, roads, cyclists, pedestrians and utilities. 
Tunnel Engineering: Previsualisation of the Fehmarn Belt immersed tunnel

Tunnelling capabilities

Ramboll adds value at every stage of a tunnelling project, providing advice on discrete phases or to the whole scheme. We offer a one-stop shop from environmental impact assessment through geophysical site investigation, design initiation and refinement, tendering, contract management and supervision to asset management.

Our tunnel engineers draw on multiple data sources, including geophysical, geotechnical, groundwater and environmental, to derive structural designs from preliminary concepts. They augment the structural plans with tunnel ventilation designs and strategies for fire safety and the installation of mechanical and electrical components. Rigorous preliminary investigation and continuous monitoring are often crucial to project success.

Ramboll’s multidisciplinary team provides high-quality solutions for all types of underground structures. Our specialist skills include tunnelling under and close to existing structures, providing permanent diaphragm walls and using a range of top-down and bottom-up methods. We offer clients a bespoke range of tunnel-related services, tailored to suit the requirements of each design.

Asset management

Ramboll’s comprehensive tunnelling experience enables us to provide a full range of asset management services, including:

  • Service life design
  • Inspections, surveys, non-destructive testing and laboratory analyses
  • Damage evaluation, rehabilitation strategies and supervision
  • Cathodic protection systems
  • Tunnel asset management and monitoring systems

Web-based management system

We apply our innovative SMART web-based infrastructure management system to tunnel assets. SMART incorporates overview and monitoring data with long-term performance-based maintenance. The system enables us to manage the condition of tunnel assets, implement activities and ensure continued functionality. We undertake routine and periodic tunnel inspections using supervisory control and data acquisition systems.

Ramboll leads industry practice in IMT design, such as for the record-breaking 18km Fehmarnbelt Tunnel between Denmark and Germany. The tunnel will be more than three times longer than the current longest IMT.

Our tunnel services

  • Cut and cover tunnels
  • Hard rock tunnelling
  • Immersed tunnels
  • Infrastructure asset management
  • Project and construction management
  • Soft ground tunnelling
  • Sustainability
  • Tunnel safety

More information on tunnels



Richard Miller. Ramboll
Richard Miller
Technical Director, Ground Engineering
T+44 20 7631 5291