High Quality Content by WIKIPEDIA articles! Rue Saint-Louis is a main street in Gatineau, Quebec that runs mostly along the north and east side of the Gatineau River in the old city of Gatineau. It starts at the boundaries of the city of Gatineau and the suburban town of Cantley, Quebec and ends at Boulevard Maloney. On its northern end until Autoroute 50, it runs parallel to the Gatineau River, while it briefly runs parallel to the Ottawa River on its eastern end.