Transmission Gully

27km greenfields four-lane motorway project.


Transmission Gully

Hiway Stabilizers was engaged by the client to provide a wide range of materials stabilisation and modification across a 27km greenfields four-lane motorway project including four new interchanges and two new link roads.    


Waka Kotahi (New Zealand Transport Agency)


CPB HEB Joint Venture & Downer NZ

Project Scope

Fill dry material modification, subgrade stabilisation, subbase and basecourse stabilisation and foamed bitumen stabilisation.

Project Highlights

More than 20,000m² cement subbase/basecourse stabilisation completed in one day. Zero LTI’s or MTI over 19,285 man hours.

Project Date

July 2019 - June 2021

Project NZ Transmission Gully 2

Key Challenges

  • Maintaining delivery through various Covid-19 lockdowns.
  • Reactive project management by client and unforgiving climatic conditions.
  • 24/7 operations at peak.

Key Benefits

With Hiway Stabilizers wide range of pavement solutions including lime and cement blends to optimise subgrade strength and design/technical input as required on pavements, multiple teams were deployed to the project at certain stages of construction over a three year period to achieve the clients project requirements within the tight timeframes. 

NZD saved
KG CO2 saved
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