Since there was only minimal investment on the line, this eventually led to the closing of passenger services between Winterberg and Allendorf for safety reasons and freight traffic between Hallenberg and Allendorf on 14 November 1966.
Da Investitionen unterblieben, mündete dies schließlich in die Einstellung des Personenzugverkehrs zwischen Winterberg und Allendorf aus Sicherheitsgründen am 14. November 1966 sowie des Güterverkehrs zwischen Hallenberg und Allendorf.