An annual ice road in northern Canada, built over frozen lakes to supply remote mine sites in the Northwest Territories and Nunavut.
The Tibbitt to Contwoyto Winter Road was first constructed in 1982 to service mining and exploration operations in one of the most isolated parts of the Canadian North. Running between 400 and 600 kilometres depending on the route, it is recognised as the world’s longest heavy haul ice road. The route operates for eight to ten weeks each year, opening in late January when lake ice reaches sufficient thickness to support fully laden lorries. Roughly 85 to 87 per cent of the road — some 495 kilometres — crosses frozen lake surfaces, while the remaining 73 kilometres consist of overland portages linking 64 separate water bodies. During the narrow operational window, convoys transport the year’s supplies, equipment and fuel to mine sites that would otherwise remain entirely cut off once the spring thaw renders the route impassable.
