Fehmarnbelt Fixed Link – the world’s longest immersed tunnel

The Fehmarnbelt Fixed Link is an 18 km immersed tunnel connecting Denmark and Germany, setting a new global benchmark for cross‑border infrastructure. Combining road and rail in a single structure, the project will dramatically reduce travel time, strengthen European transport corridors.

Project details

Client

Femern A/S

Location

Denmark / Germany

contact

Susanne Kalmar Pedersen

Partners

Ramboll-Arup-TEC Joint Venture

Share on facebook Share on linkedin Share on twitter

Client advisory

Ramboll acts as technical advisor to Femern A/S within an international joint venture, Ramboll-Arup-TEC, supporting the project from early planning through design, procurement, and construction. The scope includes technical studies, tender support, approval processes, and construction assurance, helping to manage risk and ensure quality across Europe’s largest infrastructure project.

Sund & Bælt's image library. Illustrations & Maps

Ramboll acts as technical advisor to Femern A/S within an international joint venture, Ramboll-Arup-TEC, supporting the project from early planning through design, procurement, and construction. The scope includes technical studies, tender support, approval processes, and construction assurance, hel.....

This shortcut reduces journeys by 160 kilometres. This will save time for individuals, provide a faster, shorter and lower emission freight route for businesses, and create economic growth for the region by opening up for tourism.

Susanne Kalmar Pedersen

Project Director Ramboll

Halving travel time between Copenhagen and Hamburg

World’s longest immersed tunnel

This page has a tag of:

The Fehmarnbelt tunnel applies a proven immersed tunnel method on an unprecedented scale. Prefabricated concrete elements are cast on land, floated to site, and immersed with millimetre precision into a dredged trench on the seabed. This approach enables high construction quality while reducing disruption to shipping routes and surface landscapes compared to alternative bridge solutions.