New road-rail tunnel beneath the Fehmarnbelt creates a permanent link between Denmark and Germany

In 2009, Denmark and Germany together resolved to build a fixed route across the Fehmarnbelt. Alongside a bridge, the possible plans for a tunnel as a crossing option were explored. The final decision was in favour of a tunnel. It is designed to have a length of 18.1 km and to be built as an immersed tunnel. The individual tunnel segments would be manufactured with a rectangular cross section and five cells – each the equivalent of one of the five tunnel tubes – to be floated into position and then lowered to the seabed. Two tunnel tubes will serve the motorway and two for rail transport, while the fifth will be the maintenance and supply tunnel. The segments will have a cross section of 43 × 10 metres. The land-end access will feature connecting ramps with the tunnel portals and several hundred metres of cut-and-cover tunnel. The design for the tunnel relies on ultramodern construction methods and state-of-the-art rules for ventilation and safety. Thanks to the use of the latest methods for manufacturing the individual immersed tube elements, it has proved possible to optimize key parameters such as scheduling, costs and quality.

OwnerFemern A/S
ClientJoint Venture Rambøll-Arup-TEC
Project dataTunnel length: 18.1 km, Number of cells: 5, Two rail tracks, Four road lanes
Project statusPlanning ongoing

Our services

WTM Engineers is providing the following services for the Fehmarnbelt Tunnel between Puttgarden and Rødby:

  • Planning approvals
  • Technical consultancy

Download the project description PDF

Other reference projects in this field of service

Pedestrian bridge Bremerhaven

Fehmarnbelt tunnel between Puttgarden and Rødby

Butterfly Bridge

Connecting HafenCity to the subway system

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