The standard gauge line from Oslo to Hamar was extended to Otta by 1896. Parliament approved the Dovre Line in 1908, which would see this line extended across Dovrefjell to Støren and onward to Trondheim. The Dovre Line would become the new main train line from Oslo to Trondheim and relegating the Røros Line to a secondary service. Meeting in Støren, the Trondhjem-Støren Line would therefore need to be upgraded to meet the higher standard. This involved a major upgrade to Trondheim Central Station, and installing dual gauge to Støren. The latter was taken into use on