Wehrhahn-Line Düsseldorf New construction of a double-track tunnel section with a total length of 3.5 kilometres with shield driving (length 2.35 kilometres, diameter 9.5 metres), six stations with cover construction method and two stops. Country: Germany, Federal State of North Rhine-Westphalia Building owner and originator: City of Düsseldorf, Traffic Management Authority Planning period: 2000-2005 Construction costs: Total costs of principal section 385 million Euro Work carried out: Object planning of engineering constructions and traffic facilities - fundamentals study and preliminary design planning - design planning - approval planning - final planning - preparation of the award planning of load-bearing structures - preliminary design planning - design planning - preparation of the award - responsibility in an engineers team