Alberta Provincial Highway No. 1, or
Trans-Canada Highway 1, is the main east-west highway traversing
southern Alberta,
Canada. It is designated a
core route in Canada's
National Highway System and spans approximately from
Alberta's border with
British Columbia in the west to its border with
Saskatchewan in the east. As of 2014, the route is divided throughout the province (twinning of the final of Highway 1 between Lake Louise and the British Columbia border was completed by
Parks Canada and opened to traffic on June 12), with a minimum of two lanes in each direction.