A break-through in the use as a lumber line came in 1987, when Borregaard decided to require all lumber to be sent by train or truck. NSB built three lumber terminals along the Solør Line, at Elverum, Brakereidfoss and at Kongsvinger, and started transporting of lumber the first year. This spurred a need for further upgrades to the line. NOK 110 million was invested in 1992 and 1993, involving the laying of concrete sleepers, 49-kilogram-per-meter (98 lb/yd) continuously welded rails and increasing the permitted axle load to . The final chapter for passenger trains took place on 29 August 1994, when all passenger train services were terminated.