Autoroute 520, Autoroute Côte de Liesse, or Côte-de-Liesse Road is an expressway that connects Montreal's Pierre Elliott Trudeau International Airport with Autoroute 20 at the expressway's western terminus and Autoroute 40 at the expressway's eastern terminus. This route serves as a link to P. E. Trudeau airport to residents living in Montreal's east end and west island, as well as the city of Dorval.