The reorganization of the Wientallinie and the Donaukanal line from subordinate local railways to fully developed main railways complicated and made the project considerably more expensive. Due to the architectural quality demanded by Otto Wagner, the buildings of the more important routes were much more expensive than planned before 1894. Thus moved the second phase of construction in the distance. In addition, on 11 July 1895, the Commission decided to postpone the Donaustadt line, which was still allocated to the first phase of construction, and for which to date 264,915 Austrian crowns have been incurred for preparatory work, projection costs and land acquisition. This meant that the four intermediate stations planned on this route, Kronprinz-Rudolfs-Brücke, Gaswerk, Lederfabrik and Donau-Kaltbad were obsolete.