La Bostonnais is a municipality in the Mauricie region of the province of Quebec in Canada. The community is about 10 kilometres (6.2 mi) north of La Tuque's town centre along Quebec Route 155.

Route 155 is a north/south highway on the north shore of the Saint Lawrence River in Quebec, Canada. Its northern terminus is in Chambord at the junction of Route 169, and the southern terminus is the Piles Bridge in Shawinigan. Previously the highway continued to Autoroute 20 but that section was decommissioned in 2006 when Autoroute 55 was completed.