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Highway 417 is a 400-series highway in Ontario. It is the backbone of the transportation system in the Ottawa region, where it is known as the Queensway (from the Ottawa Road 174 interchange to at least Highway 7). It extends from the Quebec border (near Hawkesbury, where it joins Autoroute 40) to Arnprior, where it continues westward as Highway 17. The eastern section from the Quebec border to the east side of Ottawa opened in the 1970s. Sections west of Ottawa have been under construction since the mid-1990s, in three phases, with the latest section to Arnprior opening in 2005. See the Queensway for more detail about Highway 417's Ottawa section.