On the "Vogelfluglinie" (Flying Bird Line) between Puttgarden and Rødby, around two million vehicles are currently transported each year on a total of five ferries, along with a number of passenger trains (Copenhagen-Lübeck-Hamburg).

The fixed link will offer a bonus to public travel in terms of speed and flexibility. Ferry waiting times will be eliminated and the trip across the fixed link will be significantly faster and take about 15 min.

Rail-based freight traffic between Germany and Denmark has been handled on the Bridge across the Great Belt since 1997. In comparison with the route through Jutland, Funen and the Great Belt, the route across the Fehmarnbelt will be 160 km shorter. Together with the Øresund Bridge between Denmark and Sweden, the Fehmarnbelt Fixed Link will represent an important link in the Northern and Central European motorway and rail networks.