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.
Waka Kotahi (New Zealand Transport Agency)
NX2 Group (Fletcher/Acciona Joint Venture)
Stabilisation of Subgrade and Subgrade Improvement Layers to utilise on-site materials and reduce imported quarried aggregates.
Upgrade of Hiway Stabilizers’ trimming capability through mmGPS systems to meet project specifications.
March 2018 - Current
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 productivity. This adaptation of both supply and fleet has allowed us to handle high project demands irrespective of access and volume challenges.
The 6m wide existing pavement required a safety upgrade to enable the safe passage of tourism and logging traffic. Tenterfield Shire Council was seeking a best value for money alternative to maximise length of upgrade for the funds available.
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.
Plant Mixed Foam Bitumen was produced and stockpiled at a nearby quarry, then hauled to the paving sites. The production target at the plant was to be a consistent 1500 tonnes per day with sufficient road haulage vehicles to ensure continuous operation of the paving operations.