sentences:  In 1870, Siegburg became the northern end of the East Rhine Railway ("Rechte Rheinstrecke"), with the intention that it would be later extended through the Agger valley through the Ruhr to Bochum or Essen, so that Siegburg would become a significant railway junction.Influential people in Cologne finally prevailed, so instead the East Rhine Railway was extended from Friedrich-Wilhelms-Hütte to Troisdorf in order to connect to Cologne, resulting in the line to Siegburg becoming only a branch line parallel with the Sieg Railway.This line was opened in 1872 and closed in 1884.