Opened 12 September 2003 | ||
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Similar Herren Tunnel, Warnow, Frieden, Conventer See, 2003 World Horticultural Exposition | ||
The Warnow Tunnel (also known as the Warnow River Crossing and the Warnowquerung in German) is a road tunnel 790 m long which connects the east and west bank of the Warnow river in the Hanseatic city of Rostock in Mecklenburg-Vorpommern, Germany.
Map of Warnowtunnel, Rostock, Germany
It is Germany's first toll road in modern times and was opened on 12 September 2003 by Federal Transport Minister Dr. Manfred Stolpe.
The tunnel was built using a technique known as immersed tube Construction: the main part of the tunnel consists of six prefabricated concrete conduits which were formed and poured in a temporary drydock nearby, floated out into the river and lowered into a dredged channel in the river bottom. This is a technique apparently pioneered in the Detroit River in construction of the Detroit–Windsor Tunnel in 1930, and replicated for sub-aqueous tunnels ever since.
The 50-year operating concession is held by Warnowquerung GmbH & Co. KG, which is 70% by the Australian investment company Macquarie Infrastructure Group which operates many tolled roads worldwide.