Subsequently, the railways were intensively expanded, including the Northwest Railway, but also through share speculation by competing railway companies. Not only the regulation of the Danube river, but also the forthcoming Vienna World's Fair in 1873 led to a violent building speculation at the time of the station construction. The financing model ultimately did not bring any relief for the state budget, but rather enormously increased the costs. Nationalization was the only way out. The Nordwestbahn was built by the Imperial Royal Austrian State Railways from October 15, 1909.