Technical overview
Lot 3 consists of the construction of 3.45 km of underground lanes: 3.2 km will be dug with an earth pressure tunnel boring machine 7.18 m in diameter.
The lot also includes the creation of 3 new stations (Aotea, Karangahape and Mount Eden), including 2 underground, to better serve the heart of the city. Our contract also covers the MEP, escalators and elevators, electrical distribution networks, tunnel ventilation systems, fire-fighting systems, architectural packages for stations, tunnel benches and the laying of rails.
Under lot 5, two engineering structures and a new 2 km lane will be built, while maintaining traffic on the North Auckland Line.
Finally, lot 7 includes the installation of electrical systems, overhead lines, signaling and control system for the entire City Rail Link.
The size of this infrastructure project, exceptional in New Zealand, and the fact that it brings together many trades (underground work, construction, electromechanics, rail systems, etc.) represent a first challenge. In addition, since the route is located in the middle of the city of Auckland, traffic must be diverted and the site is operating near many buildings.