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
Fill dry material modification, subgrade stabilisation, subbase and basecourse stabilisation and foamed bitumen stabilisation.
More than 20,000m² cement subbase/basecourse stabilisation completed in one day. Zero LTI’s or MTI over 19,285 man hours.
July 2019 - June 2021
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.
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.
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.
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.