Key achievements during the tunnel boring phase include:

• Completion of the tunnel-boring phase of the City Rail Link project, comprising two 3.45km tunnels

• The TBM travelled more than 3.5 kms, placed 1067 segment rings and removed 130,000 tonnes of spoil during the boring of the twin tunnels (each 1.6kms long from Maungawhau/Mt Eden Station to Te Waihorotiu Station, formerly Aotea)

• More than 64,200 cu m of concrete used to build the City Rail Link tunnels – the equivalent of 25 Olympic-sized swimming pools

• The Dame Whina Cooper tunnel boring machine weighs 910 tonnes is 130m long and has a diameter of 7.15m

• It cost €7.15M, with shipping costing an additional €0.6 million (NZ$13.5M at the time) Francois Dudouit, project director for the Link Alliance, the consortia of companies building the CRL, says the swifter finishing of the second tunnel reflected operational improvements and efficiency gains.

• “I’m absolutely delighted at the performance of our team of 2,000 people who have brought their very best to this important project,” says Dudouit.

• “Everyone understands we are building the future of public transport in Tāmaki Makaurau and it will leave a lasting legacy for all its people.”

• Now the tunnel boring is complete, Dame Whina Cooper will be dismantled and lifted above ground. It will then be transported to the port for shipping back to its manufacturer, Herrenknecht. Parts of it will be repurposed.https://www.cityraillink.co.nz/tunnel-boring-machine

https://www.cityraillink.co.nz/tunnel-boring-machine