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NZCS: North Auckland Railway Line Rebuild Project

Case Studies

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NZCS: North Auckland Railway Line Rebuild Project

NZCS: North Auckland Railway Line Rebuild Project

The historically significant Northern line between Auckland and North Auckland NAL, parts of which date back to 1876, requires a major rebuild to enable it to handle the demands of modern heavy rail freight and hi-cube container traffic.

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Project Details

At various times Boss Attachments have had up to 8 Antraquip milling heads operating on the widening and track lowering on the line’s 13 tunnels.

The major benefits on this project :

  • Job completed without any issues
  • Minimal vibration on the existing structures
  • Ability to carry out both lowering and detailed soffit milling operations with 1 tool
  • Ability to work right up to existing tunnel foundations when lowering without any compromise to the structural integrity
  • Ability to trench in rock not able to be ripped with a 40t excavator single pick
  • Backup and industry knowledge transfer from years of experience from the parent company in the USA

Other Projects

NZCS: Kaikoura Rail & Road Rebuild Project

The Kaikoura earthquake caused substantial damage to the Christchurch to Picton rail line and tunnels, which are over 100 years old. The tunnels suffered substantial damage from rock falls, cracking and general weakening.

NZCS: Northern Motorway Extension Project

On completion the Ara Tūhono – Pūhoi to Warkworth project will extend the 4 lane section of the Northern Motorway by 18.5km.

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