Quebec Autoroute 640
Autoroute 640 is a Quebec autoroute that runs across the North Shore Region from Quebec [Route 344|Route 344] in the Oka area to Route 138, where it ends as a four-lane expressway in Charlemagne. The road was designed to be northern bypass of the city of Montréal and was originally intended to cross the Lac [des Deux-Montagnes|Lake of Two Mountains] to connect to Autoroute 40 near Vaudreuil. It is currently long.
A-640 begins at Chemin d'Oka at a traffic circle near Oka National Park, and terminates at a signalized at-grade intersection with Rue Émile-Despins in Charlemagne.