The Barkly Highway is a national highway linking Queensland and the
Northern Territory. It is the main transport route between Queensland
and the Northern Territory, consequently many road trains use it.
The Barkly Highway runs westward from Cloncurry and the junctions of
the Flinders and Landsborough highways to the junction with the Stuart
Highway north of Tennant Creek. The entire highway is part of the
National Highway system: it is assigned National Route 66; the
Queensland portion was recently redesignated as National Route A2.
An upgrade of the Queensland section of the highway between Mount
Isa and Camooweal was completed in 2008 and despite numerous floods,
the Queensland sections of road are usually in good condition.