Tennant Creek to Darwin infrastructure corridor

The Northern Territory (NT) Government is investigating a potential infrastructure corridor from Tennant Creek to Darwin.

The infrastructure corridor will consider co-location of a range of potential infrastructure services including:

  • multiple high-pressure pipelines
  • services including water and communications.

Consolidation of infrastructure services minimises potential impacts on land that could occur through ad hoc development.

The corridor aims to facilitate the growth of the natural gas industry in the NT along with supporting other projects that may require a corridor into the future.

Project stages

The project is currently in Stage 2.

Pipeline & infrastructure corridor flowchart as described below

Each stage is described below:

  • Step/stage 1 - Prefeasibility study.
    Land tenure type assessment.
  • Step/stage 2 - Further investigations of the preliminary alignment to confirm constructability.
    Targeted discussions with key stakeholders including directly affected land owners and Native Title holders, AAPA, Land Councils.
  • Step/stage 3 - Options review and identification of preferred alignment.
    Community engagement including directly and indirectly affected land owners, nearby businesses and pastoralists, peak bodies and industry representatives, Aboriginal Land Councils and AAPA.
  • Hold point: Government consideration of options.
  • The following steps 4 - 7 are conditional on outcomes of previous steps:
    • Step/stage 4 - Securing the corridor for future infrastructure construction.
      Liaison and negotiation with directly affected landowners.
    • Step/stage 5 - Front End Engineering Design (FEED) for each pipeline/infrastructure.
      Targeted engagement with key stakeholders.
    • Step/stage 6 - Approvals for pipeline/infrastructure construction (e.g. Energy Pipelines Act).
      In accordance with legislative requirements.
    • Step/stage 7 - Construction of the pipeline/ infrastructure.
      Community engagement including directly and indirectly affected landowners, nearby
      businesses and pastoralists, peak bodies and industry representatives, Aboriginal Land Councils and AAPA.

Future use of the corridor

This project is about identifying a corridor that may contain a number of products and services including:

  • multiple high-pressure pipelines
  • services including water, electricity and communications


Consultation is commencing with landowners, occupiers and Traditional Owners about the preliminary corridor alignment. The project team will notify landowners if their property is on the preliminary alignment, and commence open discussions with landowners at this point.

The corridor route

The ‘best fit’ corridor takes into account other constraints including the following key considerations:

  • engineering: elevation, slope, ground conditions and stream / river crossings
  • environmental: habitat, endangered flora and fauna and vegetation
  • social impact: zoning, land use, cultural heritage, protected sacred sites and tenure
  • infrastructure: built environment, utilities and roads
  • cost: the most cost effective alignment is a straight route to consider value for the Territory.

The final preferred corridor is subject to engagement with all relevant landowners and key stakeholders and further detailed investigations.

Safety of proposed infrastructure

Pipeline infrastructure can be built through most terrain with the appropriate design, for instance the existing gas pipeline retained its integrity in the earthquake in the Tennant Creek region in 1988.

Detailed studies on the constructability of the proposed corridor have not yet been undertaken.

Risk assessments

The prefeasibility studies have involved a qualitative risk assessment on the preliminary ‘best fit’ alignment and risk assessments will continue to be undertaken through the planning, design and operation.

Timing for construction of the infrastructure corridor

It is too soon to predict when the infrastructure corridor will be built. There is a lot more work to be done prior to securing the corridor, and then infrastructure will only be built as need warrants.

To find out more please view the Project Overview PDF (312.1 KB)


For more information, contact NTcorridor.DIPL@nt.gov.au or free call 1800 921 301

Last updated: 12 September 2022

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