Connection of the Düsseldorf main railway station with the airport, the Düsseldorf trade fair center and the Airport City business park, construction of an underground railway station at the airport terminal.

2 parallel tunnel tubes with a length of 1.645 km each, inner diameter 10,15 m; 6 cross passages driven under the protection of ground freezing; 2 access ramps, which at the same time function as start and target shafts, Passing under A4/A133 motorways incl. connection to existing infrastructure

A new pipeline tunnel in Essen connects the Hinsel district with the intake system to the Essen-Süd wastewater treatment plant.