Hi Lutz. You are confusing CityRailLink with the CentralInterceptor project. The former is 12 meter transport tunnel whereas the latter is a 5.45m waste water tunnel.
In any case, knowing your preferences, you will be glad to hear that it is 2-0 for Herrenknecht.
...el will be 4.5 meters, high enough to fit a giraffe.
https://www.ghella.com/en/media/news/central-interceptor-project-tbm-has-been-ordered
#CentralInterceptor
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The TBM that will be used for the excavation of the Central Interceptor Project has officially been ordered. The Central Interceptor is New Zealand’s largest ever wastewater tunnel, that will run between Western Springs and the Mangere Wastewater Treatment Plant.
The tunnel will be excavated wit...