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Fehmarnbelt tunnel - Both portals near completion

11/09/2025
Fehmarnbelt tunnel - Both portals near completion

The Danish entrance to the Fehmarnbelt tunnel with its 160-m long cut-and-cover tunnel at Rødbyhavn on Lolland is almost complete.  The transition between the motorway and the railway on land and the tunnel underwater takes place via the so-called tunnel portal, which has been under construction since 2022.

The tunnel sections built on land are now being covered with earth and over time they will seamlessly blend into the surrounding landscape, similar to the integration seen with the Great Belt and Øresund connections. 

Meanwhile Femern Link Contractors (FLC) continues the construction of the 800-m-long ramp that will guide trains into the tunnel. So far, 300 m of the ramp have been completed. 

Work is also underway on an operations building, which will later house facilities for operating personnel. From there, the tunnel’s systems and safety will be monitored. 

A tunnel portal is also being constructed on the German side at Puttgarden on Fehmarn. There, the front section of the portal has been under water since last year as well. Work on the operations building at the German entrance to the tunnel is also well advanced. It will house systems for the operation of the tunnel but will not be regularly staffed by operating personnel. 

Both tunnel portals are quite be ready for the next milestone: immersing and connecting of the first tunnel elements underwater. However, before this process can begin, the specially built immersion vessels Ivy 1 & 2 must complete their final tests and obtain all the necessary permits. Sund & Bælt expects this to be finalised later this year. The first tunnel element will be immersed on the Danish side and connected to the tunnel portal at Rødbyhavn. 

Click here, dk/14 and de/167 for more detailed information in the tunnelbuilder archive. Visit https://femern.com and https://sundogbaelt.dk. 37/25.



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