|Map of central Australia with Plenty Highway highlighted in red|
|Length||498 km (309 mi)|
|Route number(s)||State Route 12|
|West end||Stuart Highway (National Highway 87), 69 km (43 mi) north of Alice Springs|
|Sandover Highway (State Route 14)|
|East end||Donohue Highway, Tobermorey Homestead (NT/Queensland border)|
The road begins at a turnoff from the Stuart Highway 68 kilometres north of Alice Springs, and finishes at Tobermorey Homestead on the Northern Territory/Queensland border. It then continues for another 249 km to Boulia Queensland, as the Donohue Highway.
The first 100 kilometres from the Stuart Highway to Ongeva Creek is sealed. The remaining 178 km to Jervois Homestead is unsealed as is the rest of the track to Boulia. Information about its condition may be obtained from the Harts Range police station, 112 km from the Stuart Highway.
East of Jervois Homestead, the road is formed earth, deteriorating to rocks and bulldust as it nears Tobermorey, 213 km from Jervois Homestead. The road north to Urandangi and thence to Mount Isa bears left just before Tobermorey.
As at other Northern Territory / Queensland border crossings, the road may deteriorate east of the border into Queensland. Travellers should be aware of deep potholes and bulldust. It is 249 km from Tobermorey to Boulia and good camping may be found at the Georgina River, at about the 125 km mark.
Fuel and food may be obtained at Gemtree, Atitjere community, Jervois Homestead and Boulia. As of June 2009, fuel and camping is no longer available at Tobermorey. Travellers should note that the Donohue Highway is not suitable for ordinary caravans and that road trains up to 53 metres in length use both highways.
Junctions and localities
|Burt Plain||Stuart Highway (National route 87) – Alice Springs Darwin||68 km north of Alice Springs|
|Anmatjere||27||17||Sandover Highway (state route 14) – Camooweal|
|Gemtree||70||43||Caravan park, fuel available|
|Jervois Station||277||172||Fuel available|
|Tarlton Downs Station||347||216|
|Tobermorey||492||306||Urandangi Road – Urandangi, Mount Isa|
|Tobermorey Homestead||496||308||Continues into Queensland as Donohue Highway – Boulia|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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