Electorate of Hesse
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.