page_title: Alberta Highway 1
section_title: Route description
hierarchical_section_title: Alberta Highway 1 / Route description
context_page_description: Alberta Provincial Highway No. 1, commonly referred to as Highway 1, is a major east-west highway in Southern Alberta that forms the southern mainline of the Trans-Canada Highway. It runs from the British Columbia border near Lake Louise through Calgary to the Saskatchewan border east of Medicine Hat. It continues as Highway 1 into both provinces. It spans approximately 534 km from Alberta's border with British Columbia in the west to its border with Saskatchewan in the east. The route is a divided expressway throughout the province with the exception of a section in central Calgary where it is an arterial thoroughfare. Twinning of the final 8.5 km of Highway 1 between Lake Louise and the British Columbia border was completed by Parks Canada and opened to traffic on June 12, 2014.
context_section_description: Highway 1 is designated as a core route in Canada's National Highway System.
caption: Eastbound near Canmore
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