Route 148 is an east-west highway in Quebec, Canada. It runs from junction of Autoroute 13 and Autoroute 440 in Laval in the Montreal region to the Ontario-Quebec border in L'Isle-aux-Allumettes in western Quebec. For most of its length, Route 148 follows the north shore of the Ottawa River where it acted as the principal route between communities in the Outaouais region until the completion of Autoroute 50 in 2012.