Icefields Parkway When initially constructed, the Icefields Parkway was designated as Highway 1A between Lake Louise and
Jasper. The route was renumbered to Highway 93 in 1959.
Kicking Horse Pass A former section of Highway 1A exists along the former
Kicking Horse Trail, the original road between Lake Louise and
Golden, British Columbia that opened in 1926. When the Trans-Canada Highway was realigned in 1962, the segment became Highway 1A. It began at
British Columbia Highway 1, west of the Alberta border in
Yoho National Park. It meandered eastward through
Kicking Horse Pass to Lake Louise, generally paralleling the main
Highway 1 and
CPR rail line to the south.
17 Avenue SE Highway 1A used to be an
alternate route that followed 17 Avenue SE in Calgary and linked with Highway 1 in Chestermere. It began at
Highway 2 (
Deerfoot Trail) and
Blackfoot Trail interchange and continued east along 17 Avenue SE where it passed through the former town of
Forest Lawn. It crossed 116 Street SE, entering Chestermere and terminated at the Highway 1 interchange. It was dropped by the province in 2013 and the section within Chestermere was renamed to
Chestermere Boulevard. As of 2016, remnant Highway 1A signage still remains on Deerfoot Trail and sections of 17 Avenue SE within Calgary; however, it has been removed along Stoney Trail, through Chestermere, and along the Trans-Canada Highway.
Downtown Calgary The existing Bow Valley Trail / Crowchild Trail section and former 17 Avenue SE section of Highway 1A used to be connected by following a series of streets through inner-city Calgary. From its present terminus, Highway 1A followed 16 Avenue NW east and was
cosigned with Highway 1 to
14 Street NW. Highway 1A turned south, and after crossing the
Bow River using the Mewata Bridge, and then branches east at its interchange
Bow Trail. Highway 1A passed through
downtown Calgary on a pair of
one-way streets, with eastbound traffic following 9 Avenue S and westbound traffic following 6 Avenue S. East of 6 Street SE, both directions of Highway 1A followed 9 Avenue SE, crossing the
Elbow River on the Inglewood Bridge and passing through the community of
Inglewood, linking with eastern section of Highway 1A by either using 16 Street SE and Blackfoot Trail, or directly along 17 Avenue SE. This section of Highway 1A was dropped in the 1970s.
Brooks – Medicine Hat A former alignment of the Trans-Canada Highway between Brooks and Medicine Hat, through
County of Newell and
Cypress County, is locally referred to as
Highway 1A. Running parallel to Highway 1, it runs to the south along the
Canadian Pacific Railway mainline. The road is paved between
Brooks and
Highway 875, with long-term plans to pave it to
Tilley, as well as some sections around
Suffield. Between Tilley and Suffield, the road has both gravel and unimproved sections and serves as a local ranch-access road. Once in Cypress County, it is referred to as the
Old Trans-Canada Highway, while in
Redcliff and
Medicine Hat, it goes by
South Railway Avenue and
Saamis Drive. Despite the
Highway 1A name, the route is maintained by the local municipalities and is not part of the provincial highway system. == Highway 1X ==