The Federal Republic of Germany, represented by the State Road Construction NRW RNL Rhein-Berg, intends within the framework of the project "BAB 1, 8-str. Expansion between AS Köln-Niehl and AK Leverkusen-West including new construction of the Rheinbrücke Leverkusen "to carry out the compensatory measure" retention area Monheim Rheinbogen ".

The subject of the present tender is the construction of the retention area in the Monheim Rheinbogen as compensation for the flood retention area lost as a result of the construction of the new Rhine bridge. The volume required for this purpose should be provided by excavating the valley flanks on an existing flood basin. In addition, after completion, the restoration of all routes may be required.