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Pūhoi to Warkworth

Pūhoi to Warkworth is the first of two stages for Ara Tūhono, an extension of Auckland’s Northern Motorway on State Highway 1. Hiway Stabilizers are working alongside NX2 to deliver both the stabilised Subgrade and Subgrade Improvement Layer for the 18.5km project. 

Principal

Waka Kotahi (New Zealand Transport Agency)

Client

NX2 Group (Fletcher/Acciona Joint Venture)

Project Scope

Stabilisation of Subgrade and Subgrade Improvement Layers to utilise on-site materials and reduce imported quarried aggregates.

Project Highlights

Upgrade of Hiway Stabilizer’s trimming capability through mmGPS systems to meet project specifications.

Project Date

March 2018 - Current

Project NZ Puhoi Warkworth 2

Key Challenges

  • Assisting NX2 with meeting Greenroads certification Silver Rating.
  • Fill drying in challenging terrain with limited access.
  • Meeting project milestones across various sections of the project simultaneously. 

Investment & Supply

With heavy demand expected on blended lime and cement supply, Hiway Group have invested on upgrading storage and blending capacity to ensure long-term binder supply can be sustained. This accompanied with investment in high capacity, low ground pressure spreader trucks have enabled us to access challenging areas of the project to maximise daily productivitiy. This adaptation of both supply and fleet has allowed us to handle high project demands irrespective of access and volume challenges.  

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auckland
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