The design aesthetics of a tunnel concealed 40 metres below sea level can easily be overlooked. However, landscape architects have been involved to help design a natural travel experience in which commuters from both sides of the tunnel will crest a hill for a full sea view before dipping down into the bowl-shaped tunnel entrance.
Designing immersed tunnels is all about optimising resources. After immersion, the free space in tunnel elements needs to be ballasted with concrete. For this reason, the Fehmarn Belt tunnel elements have been designed with limited space to ensure absolute minimum resource use.
As a new concept in immersed tunnel technology and design, the underwater link is constructed from 79 standard and 10 special elements to allow for a traffic deck and a maintenance deck. Systems for electricity, communication, monitoring and drainage take up space and require maintenance. These are integrated in special elements on a lower level beneath the traffic routes, thus allowing easy access for personnel without disrupting traffic.