Grand Duchy of Mecklenburg-Schwerin
The line ran through the territories of five then independent countries within the German Confederation: the Free and Hanseatic City of Hamburg, two duchies ruled over by the King of Denmark (Holstein and Lauenburg), the Grand Duchy of Mecklenburg-Schwerin and the Kingdom of Prussia. Since Bergedorf was a condominium, jointly owned by the Free Hanseatic City of Lübeck and Hamburg, Lübeck was also affected by its construction.