Arnhem Highway duplication planning study

The Northern Territory Government is undertaking a planning study for future duplication of a 10 kilometre section of the Arnhem Highway from the Stuart Highway intersection to Kostka Road in Humpty Doo.

The Arnhem Highway is a major arterial road that connects the Darwin region to Jabiru and Kakadu National Park.

There are several undeveloped or unmaintained roads in Humpty Doo, some of which are subject to flooding, and cross-intersections with reported safety concerns.

The key objectives of the planning 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.

The concept design will consider options for a new intersection on the Arnhem Highway to connect areas north of Humpty Doo via a new north-south connector. This north-south connector is detailed within the Humpty Doo Area Plan but its location will be reviewed as part of this planning study process.

Review the concept design

There are various ways to view the concept design:

You can also visit us at a community information stall at Humpty Doo Plaza on Saturday 4 December 2021 between 10am and 2pm.


Feedback is invited on the concept design for duplication, including the options for a north-south connection.

The planning study considers previous feedback on the Humpty Doo Area Plan and the Local Roads Transport Strategy for Humpty Doo.

Two options have been developed to create a signalised intersection on the Arnhem Highway to improve safe access to and from the Humpty Doo Commercial and Village Centre.

One is a three-way signalised intersection at the existing Freds Pass Road and Arnhem Highway corner; the other is a three way intersection to the east by extending Challoner Circuit to meet Arnhem Highway at a new three-way intersection.

The draft engineering concept design for the future highway duplication will be further developed based on community feedback, including the location of a potential new north-south connector.

Get involved

You can provide feedback on the Arnhem Highway duplication project via:

Provide feedback

Consultation is open for four weeks from Monday 22 November 2021 to Monday 20 December 2021.

For more information, read the consultation fact sheet PDF (2.4 MB).

Last updated: 23 November 2021

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