Construction of the Fehmarnbelt tunnel began in 2020. Here you will find an overview of the construction phases.
Experience the construction project at close hand
Visit our exhibition centres in Rødbyhavn and Burg and come close to the construction of the world’s longest immersed tunnel
We’re building alongside nature
We take nature and the environment into account when building the Fehmarnbelt tunnel. This applies to the extensive construction work and the operation of the completed tunnel.
News
April 22 2026
First tunnel element prepared for immersion
The first tunnel element of a total of 89 that will connect Lolland with the German island of Fehmarn, has just been filled with 4,500 tonnes of ballast concrete. This marks an important milestone in the process leading up to the first immersion. Watch the video down below.
Read more news here
Why we're building the Fehmarnbelt tunnel
Denmark’s largest infrastructure project
The Fehmarnbelt tunnel will remove a bottleneck, reduce travel time and strengthen links between Scandinavia and Central Europe.
Time-saving
When the Fehmarnbelt tunnel is completed, the journey between Rødbyhavn and Puttgarden will take 7 minutes by train and 10 minutes by car.
A shortcut to Central Europe
The Fehmarnbelt tunnel plays a key role in the future European transport network and will boost the transport of freight by electric trains.
How we are building the world's longest immersed tunnel
Step by step, the 18 km long immersed tunnel at the Fehmarnbelt is taking shape.
A shortcut to Central Europe
The construction of the Fehmarnbelt tunnel is co-financed by the European Commission, which has named the construction a priority project. The connection plays a key role in the transport network of the future in Europe.