The Norwegian railway network consists as of March 2010 of 4,159 kilometres (2,584 mi) of line, owned and managed by the Norwegian National Rail Administration. Of this, 3,900 kilometres (2,400 mi) has regular traffic. This includes 30 lines in regular traffic and 10 lines with irregular traffic. Twenty-four of these lines are electrified. Norway's longest is the Nordland Line, which runs 734 kilometres (456 mi) from Trondheim to Bodø. The longest electrified line is the Sørlandet Line, which runs 563 kilometres (350 mi) from Drammen to Stavanger.