After the Bergen Line was electrified, the work continued on the Dovre Line. The section from Hamar to Otta was finished in 1967, and the following year to Dombås. This allowed the locomotives to be transferred to secondary lines. With the final delivery of the last units in 1969 and the completion of the electrification of the Dovre Line in 1970, the final steam locomotive was taken out of service. During the last half of the 1960s, the Di 3 was put into service on the Rauma Line, the Røros Line, the Solør Line, the Valdres Line and the Meråker Line.