 The first part of the Furuset Line was connected on 18 November 1970, and was followed by extensions to the lines throughout the 1970s until the opening of Ellingsrudåsen in 1981.The advent of the metro fueled the closing of tram lines, and in 1966 the connection between Grensen and Sagene closed, followed the next year by the Vippetangen Line (that since 1964 had been used for grain transport), the Helsfyr Line and the Simensbråten Line branch of the Ekeberg Line.The last closing of a tram line occurred on 24 June 1968 when the connection between Schewigaard Street and Etterstad was terminated.