Germany, 2000-2003
General description
Located 250 kilometres north of Berlin, the industrial port of Rostock is cut in two by the estuary where the Warnow river flows out into the Baltic Sea. To link the two riverbanks, the city awarded Bouygues Travaux Publics a 30-year concession for a fixed crossing of the river. An immersed tube quickly emerged as the most appropriate solution. Six caissons were therefore precast on dry land. Closed at both ends, they were floated and towed into place before being immersed one by one, and then connected. The temporary bulkheads were then removed to form a 790-metre-long single tube.
Customer / concession authority : Hansastadt Rostock
