5,580m² of subgrade stabilisation within the live rail corridor at Hornsby Junction.
Novo Rail Alliance
Site investigation, materials testing and Design Report preparation. 5,580m² insitu subgrade stabilisation in live rail corridor.
May - October 2017
Insitu stabilising the subgrade eliminated the need to remove material (that was classified as contaminated) and replace it with 2000 tonne of imported materials. This decision made best use of the insitu materials rather than adding to landfill regulated waste.
The reduced materials haulage operations substantially reduced disruption on the heavily trafficked adjacent road networks, nearby shopping precinct and local community. Close attention to logistics management and coordination with the client ensured there were no delays to train operations.
The use of Hiway Group’s proposed lime and cement blend stabilisation proved to be a cost and time effective solution with significant advantages for the client. The project was completed within the client’s scheduled timeframes and to the specified quality and design requirements without impacting routine rail operations.
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.
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.