In northern British Columbia, the northern route of the Trans-Canada Highway is Highway 16, the westernmost section of the Yellowhead Highway. The Yellowhead Highway is a part of the Trans-Canada Highway that runs across Western Canada. The highway closely follows the path of the northern B.C. alignment of the Canadian National Railway. The number "16" was first given to the highway in 1942, and originally, the route that the highway took was more to the north of today's highway, and it was not as long as it is now. Highway 16 originally ran from New Hazelton east to an obscure location known as Aleza Lake. In 1947, Highway 16's western end was moved from New Hazelton to the coastal city of Prince Rupert, and in 1953, the highway was re-aligned to end at Prince George. In 1969, further alignment east into Yellowhead Pass was opened to traffic after being constructed up through 1968 and raised to all-weather standards in 1969. Highway 16's alignment on the Haida Gwaii was commissioned in 1984, with BC Ferries beginning service along Highway 16 to the Haida Gwaii the following year.