Route 348 is a provincial highway located in the Lanaudière and Mauricie regions of Quebec. It runs from the junction of Route 125 just west of Rawdon and ends at Route 138 in Louiseville. It overlaps Route 337 and Route 341 in Rawdon, Route 131 northwest of Saint-Félix-de-Valois, and Route 347 in Saint-Gabriel-de-Brandon.

Route 138 is a major highway in the Canadian province of Quebec, following the entire north shore of the Saint Lawrence River past Montreal to the temporary eastern terminus in Kegashka on the Gulf of Saint Lawrence. The western terminus is in Elgin, at the border with New York State south-west of Montreal. Part of this highway is known as the Chemin du Roy, or King's Highway, which is one of the oldest highways in Canada.