Inland Rail – Parkes to Narromine main image

Inland Rail – Parkes to Narromine

The P2N project is the first NSW section of the 1,700km long Inland Rail project between Victoria and Brisbane, Queensland. The P2N section is one of 13 individual projects that make up the Inland Rail Project. The P2N section is 104km in length and involved the removal of existing track infrastructure, realignment, upgrade and reconstruction with increased bearing capacity for double stacked container transport.

Inland Rail - Parkes to Narromine map


2018 to 2020




InLink JV


Our scope included the supply, spreading and mixing of binders to In-situ recycle and reuse various subgrade layers followed by moisture conditioning of the structural fill and capping layers.


  • This project was one of the largest subgrade recycling projects in Australia

  • Multiple work fronts running concurrently to meet program.

  • The logistical challenges around binder supply and security were pivotal to success



over traditional design




The in-situ recycling option was the most appropriate solution to delivering a robust subgrade foundation for the new rail line. It minimised the need for removal and disposal of existing poor quality materials and the depletion of scarce new quarry products.

In-situ recycling enabled the engineering properties of the of the existing soils to be improved through the addition of binders to chemically alter the soil structure to enable increased carrying capacity required for the new rail line.

Inland Rail – Parkes to Narromine - image 1


  • Significant cost and carbon savings due to use of in-situ recycling methodology

  • Project delivered to InLink programme utilising up to 8 crews working concurrently.

  • Extremely complex binder logistics management ensured no programme slippage

  • Works successfully executed in the complex safety critical rail environment

Inland Rail – Parkes to Narromine - image 2
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