Quebec Autoroute 31
| Autoroute Antonio-Barrette | ||||
A-31 highlighted in red | ||||
| Route information | ||||
| Maintained by Transports Québec | ||||
| Length | 14 km (8.7 mi) | |||
| Existed | 1966–present | |||
| Major junctions | ||||
| South end | A-40 / R-131 in Lavaltrie | |||
| North end | R-131 / R-158 in Joliette | |||
| Location | ||||
| Country | Canada | |||
| Province | Quebec | |||
| Major cities | Joliette, Lavaltrie, Saint-Thomas | |||
| Highway system | ||||
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Autoroute 31 (A-31) is an Autoroute in the region of Lanaudière in Quebec. Constructed in 1966, A-31 primarily links Joliette with A-40 and in turn to Montreal, Trois-Rivières, and other points served by Quebec's autoroute system. A-31 is only 14 km (8.7 mi) long, making it one of the shortest autoroutes in the province. It is multiplexed with Route 131 for its entire length.
A-31 carries the name Autoroute Antonio-Barrette, named for a politician from Joliette who briefly served as Premier of Quebec in 1960.