In 1980, Alberta starting twinning Highway 1 and Highway 16, expecting the process to take 10 years. The last part of the highway in Alberta to be twinned was inside Banff National Park, which was under federal government jurisdiction.

The original trans-Canada route between Calgary and BC was via Highway 93 between Banffand Radium through Kootenay National Park. Work began in 1910 on the “Auto Route of the Great Divide”, to build a highway across the Rocky Mountains, starting with a road from Banff to Castle Junction to Banff. Interrupted by World War I, the road between Castle Junction and Windermere was completed between 1920 and 1922, and officially opened in 1923 as the Banff-Windermere Highway.

Columbia Icefields, as seen from Banff-Jasper Icefields Parkway

In 1946, following World War II, Prime Minister Mackenzie King changed the name of Castle Mountain to Mount Eisenhower to honour the World War II general Dwight D. Eisenhower. At that time, Castle Junction was renamed Eisenhower Junction. Castle Mountain was officially restored to its original name in 1979, at which time Eisenhower Junction was also renamed Castle Junction, though many locals still use the old name.

In 1933 the construction began on a highway between Jasper and Banff, and was completed in 1939, and officially opened in 1940.

In 1965 the Canmore route is realigned away from the town centre, and the old route designated Highway 1A.

Icefields Parkway photos

Twinning in Banff National Park

Start of construction of Animal BridgeParks Canada Agency commenced twinning of the highway in 1979, balancing transportation service levels, public safety, while mitigating adverse effects on wildlife mortality and habitat fragmentation. This let to the construction of above ground “animal bridges” as well as underpasses.

The first section was from the Park Gates to Banff in 1981, and to Sunshine Village including an overpass to the ski resort, completed by 1983.

Next to be twinned was the 14 km segment between Moraine Creek and Castle Junction, including new highway alignment and nine major crossing structures, including two 60m wide landscaped animal overpasses, page wire fencing to prevent wildlife from accessing the highway.


Lastl to be twinned was the 35 km stretch from Castle Junction to Lake Louise and to the B.C. border, which was completed in 2014. The 82 kilometres of project cost various stakeholders about $317M. Exclusion fencing on both sides of the highway and the construction of several animal bridges has reduced wildlife-vehicle collisions by over 80 percent.


Banff National Park-Animal Bridge Under Construction

Banff-Canmore Legacy Trail

Hoodoos on north side of highway, inside the park gate
Eastbound drivers will notice a bicyle pathway adjacent to the highway. This is the Banff-Canmore Legacy Trail, which runs for about 27 km from the Travel Alberta Visitor Information Centre in Canmore, to the Town of Banff. In Canmore, you can park in town and proceed to Information Centre, where parking is limited. The trail was built in 2011 to celebrate the 125th anniversary of Banff National Park.

The trail has a 30m elevation gain, and riders can expect 1 to 1.5 hours each way. The trail is very popular mid-April to mid-October, but is used year-round. The trail is popular with hospitality workers living in canmoe but working in Banff, and with tourists of all ages and fitness levels. There are bear gates to protect from bears and some electified mats to deter other wildlife (cyclist notes: keep any pets off the mats, and cyclists should not dismount on the mats)

The Legacy Trail continues west of Banff, on the north side of the Vermillion Lakes, to the junciton with Highway 1A. During times inthe Spring and Fall, Highway 1A is closed to automobiles, enabling cyclists to ride up to Johnson Canyon, a further distance to ## kilometres. The portion of 1A from Lake Louise south to Johnson Canyon, and the road connecting the Trans-Canada to Castle Junction are open to automobiles year-round (to provide access to a motel and gas station there).

Trans-Canada Itinerary Segment Map

Use mouse to drag/move map. Click on “+” or “” to zoom in or out. “Satellite” combines map & photo.