With a length of 17.6 km the Fehmarnbelt Fixed Link between Fehmarn in Germany and Lolland in Denmark will be the longest combined rail and road tunnel to date. It will be five times the length of the Øresund tunnel between Copenhagen and Malmö and three times the length of the Trans-Bay Tube Bart Tunnel in San Francisco, which is currently the world's longest immersed tunnel.
The Fehmarnbelt Tunnel will not only be the longest but also one of safest and most advanced tunnels of its kind. While the current ferry crossing takes 45 minutes, train passengers will require only around seven minutes for crossing the Fehmarnbelt Fixed Link. Drivers will take roughly ten minutes.
Source: Embassy of Denmark in Poland and website: www.femern.com