It runs between Route 134 in Longueuil and Route 132 in Lévis, connecting the south shore areas of Montreal and Quebec City; it also serves the administrative regions of Montérégie, Centre-du-Québec, Estrie and Chaudière-Appalaches.
It connects Route 134 in Longueuil to Route 132 in Lévis, linking south shore areas of Montreal and Quebec City; it also serves administrative regions of Montérégie, Centre-du-Québec, Estrie, and Chaudière-Appalaches.