 With the opening of the line, the extra trains on from St. Hanshaugen were extended to Fæstningebryggen.In 1900 KKS presented plans for an expansion of the Sagene Line through Arendalsgaten, Bentse Bridge, Hegermannsgate and Vogts gate to Grefsen Station (then known as Sandaker Station).This was found by the municipal council to be too extensive and the instead supported that the line be built as an extension of the Grünerløkka–Torshov Line.