Before the construction of the all-weather highway, the
Tuktoyaktuk Winter Road, an
ice road, connected Inuvik with
Tuktoyaktuk during the winter months across the frozen
Mackenzie River delta channels and the frozen
Arctic Ocean, which was up to deep underneath the highway. In 1974,
Public Works Canada completed a survey and technical study of a route between the towns. highway extension to Tuktoyaktuk. The 2012 federal budget announced $150 million for the project, and this commitment was increased in March 2013 to $200 million. The highway was seen as both a symbolic effort to link Canada's coastlines by road, and an aid in
Arctic sovereignty and access to natural resources. The
Inuvialuit completed an environmental review of the project in January 2013 and provided their approval. In March 2013, the territorial legislature approved $65 million for construction of the all-weather highway. Construction of the highway began in January 2014 and was completed in two directions, with one crew working from the Inuvik side and a second working from the Tuktoyaktuk side.
Permafrost presented a challenge for construction of the highway, with the surface melting, leaving much of the construction area under water. The first three years of the project saw crews working 24 hours per day, in the extreme cold and high winds of the arctic winter. The highway opened on 15 November 2017 and includes eight bridges and 359
culverts. With the completion of the highway, the original Tuktoyaktuk Winter Road was permanently closed at the end of the 2017 winter season. The ITH project won a National Award for Engineering Project or Achievement in 2019 from
Engineers Canada. ==Issues==