Kurfürstentum Hessen
The construction of the Kinzig Valley Railway commenced as part of the Bebra–Hanau railway or Kurhessen State railway (). After the Prussian annexation of the Electorate of Hesse-Kassel ("Kurhessen") as a result of the Austro-Prussian War of 1866, it was completed to Frankfurt as the Frankfurt-Bebra railway in 1868.