As of August 2016, the U.S. portion of the highway is paved from the Taylor Highway junction almost as far as Chicken, Alaska, and again for the final 10 kilometres from the Eagle turnoff to the Canada–United States border at Little Gold Creek. Most of the Canadian portion is unpaved. The paved Canadian sections are from kilometre 0 (at Dawson) to km 9 (mile 0 to mi 5.4), km 74 to 76 (mi 46.0 to 47.2), km 79 to 82 (mi 49.1 to 51.0), km 83 to 94 (mi 51.6 to 58.4) and km 99 to 104 (mi 61.5 to 64.6) at the Canada–US border.
The highway is so named because, along much of its length, it skirts the crest of the hills, giving looks down on the valleys. It is also one of the most northerly highways in the world at those latitudes. Two nearby, farther north highways are the Dempster Highway (Yukon Route 5) and the Dalton Highway (Alaska Route 11). It is not particularly safe in winter, even for snowmobile use, due to the lack of trees for shelter.
A ferry connects West Dawson to Dawson in summer,[2] and residents living in West Dawson and nearby Sunnydale cross on the ice during the winter. A bridge is planned by the Yukon government, although there is significant division among Dawson area residents as to whether such a bridge should be built. The west-bank residents received improved phone service only in 2004 but do not have a public electricity supply.
A 50 km (31 mi) branch road off the highway was used to reach the town of Clinton Creek, Yukon, a site of a former asbestos mine that has been shut down since 1979.