 He then forced the Grand Trunk Railway to sell its Rivière-du-Loup line to the Intercolonial Railway to complete a link between Halifax and the St. Lawrence Seaway.He also refused to give the CPR running rights over the Intercolonial Railway, though he did convince the CPR to build the Short Line from Halifax to Saint John.In terms of canals, Tupper's time as Minister of Railways and Canals is notable for large expenditures on widening the Welland Canal and deepening the Saint Lawrence Seaway.