This is a list of highways maintained by the government of Quebec. Autoroutes The Autoroute system in Quebec is a network of expressways which operate under the same principle of controlled access as the Interstate Highway System in the United States or the 400-Series Highways in neighbouring Ontario. (Montreal) (Quebec City) Regional routes South of the St. Lawrence River North of the St. Lawrence River Trans-Canada The Trans-Canada Highway though Quebec does not have a distinct number, but rather piggybacks over the provincial highway system, mainly autoroutes, and is signed with the a numberless TCH shield next to the numbered provincial highway shield. As no single provincial highway crosses the entire province between Ontario and New Brunswick, the main Trans-Canada route follows (from east to west) Autoroutes 40, 25, 20 and 85; with A-85 being interspersed with Route 185 as construction to upgrade the latter to autoroute standards progresses. Other significantly-long roads Route de la Baie James (James Bay Road) Route du Nord (North Road) Route Transtaïga (Trans-Taiga Road) References External links Transports Québec autoroutes.info: "Ancienne numérotation du Québec"