Quebec Autoroute 540
| Autoroute Duplessis | ||||
| Route information | ||||
| Maintained by Transports Québec | ||||
| Length | 5.1 km (3.2 mi) | |||
| Existed | 1966–present | |||
| Major junctions | ||||
| South end | A-73 / R-175 in Québec | |||
| A-40 in Québec | ||||
| North end | R-138 in Québec | |||
| Location | ||||
| Country | Canada | |||
| Province | Quebec | |||
| Major cities | Québec City | |||
| Highway system | ||||
| 
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Autoroute 540 is a short spur highway, connecting Route 138 to Autoroute 73 and linking the Jean Lesage International Airport with the Pierre Laporte Bridge. It is also known as Autoroute Duplessis, honouring former premier Maurice Duplessis.