The highway is approximately 245 km (152 mi.) long and is almost entirely unpaved. A 4.5 km section is paved from La Loche to the Clearwater River Dene Nation. From there a paved access road leads to the First Nations village of Clearwater.
The highway carries the name Semchuk Trail. Martin Semchuk and John F. Midgett both from Meadow Lake and Jonas Clarke of La Loche were involved in building the original trail in 1955-56.
Highway 955 has nearly no intersections with other roads due to its northern location. About one-third of the way to Cluff Lake Mine, there is an access road to Descharme Lake. According to provincial road maps dating from the early 1980s, a seasonal/winter road at one point continued north from Cluff Lake to the shore of Lake Athabasca and then across the lake towards Uranium City, but this appears to no longer be in use.