Arnhem Highway NT

The Northern Territory Government has awarded a $310,000 tender to plan the duplication of a section of Arnhem Highway.

Cardno was awarded the tender to develop concept plans for duplicating the 10km section between Stuart Highway and Kostka Road.

Arnhem Highway is a key route in the NT road network running east-west from the Stuart Highway into Arnhem Land and measuring a total distance of 227 km. 

The route supports economic growth in industries such as tourism, agriculture, mining and construction. 

The Arnhem Highway links Darwin to the World Heritage Listed Kakadu National Park; Mt Bundy Quarry which is the main source of Darwin’s quarried construction products, as well as numerous communities, stations, farms, and tourist operations.

Currently, the road is two-lane (one in each direction); however, an upgrade will be required in the longer term to accommodate future transport needs and to support area planning processes for the Humpty Doo locality and activity centre.

The key objectives of the study are to:

  • Provide safe access to enable land developments
  • Provide an efficient route to improve freight productivity
  • Provide a safe and attractive route to support tourism and rural residential development
  • Manage future transport needs

This is a planning study for the medium to longer term and no construction funding is available at this stage.

Community consultation will be invited in the preparation of a concept design. To register interest in finding out more, email

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