Fehmarn Belt Fixed Link – World Longest Immersed Tunnel

The Fehmarn Belt Fixed Link tunnel will connect the German island of Fehmarn with the Danish island of Lolland. This would cross over the Fehmarn Belt in the Baltic Sea – 18 km wide – hence providing a direct link by railroad and highway between northern Germany and Lolland, and thence to the Danish island of Zealand.

The Fehmarn Belt will be crossed by an immersed tunnel, at the planned 17.6 km long the longest ever. According to the senior project managers, as well as being the world’s longest immersed tunnel, it will be the world’s longest combined road and rail tunnel; the world’s longest under water tunnel for road; the deepest immersed tunnel with road and rail traffic; and the second deepest concrete immersed tunnel.