Currently, the OVR operates between Sudbury and Temiscaming, Quebec, reduced from its original routing between Sudbury and Smiths Falls with a branch to Temiscaming.
The rerouting came about as a result of the reduction of both local traffic on the line and through traffic operated by the Canadian Pacific. As traffic was reduced on other CP routes, that railroad was able to redirect trains onto its lines through Toronto, and RailAmerica's lease on the line to the east of Petawawa, Ontario ended in December 2009. The OVR continued operating the route between Sudbury and Temiscaming, and in early October 2010, RailAmerica and CP reached a new agreement under which those operations would continue, while CP would continue procedures for ending service to the east of Mattawa. On 3 August 2011, it was announced that the rails between Renfrew and Pembroke, Ontario were planned to be removed by the end of the year, with the remainder of the Mattawa—Smiths Falls route to be removed in following years.
The railroad once hauled around 70,000 carloads a year, the majority of which came from CP's intermodal bridge traffic. The rest of it was self-generated, and included chemicals and forest products. Very little of this traffic came from east of Mattawa. As of 2013, carloadings amount to approximately 8,000 per year.