The first tender documents for the construction of the tunnels and new stations have been released to the industry.
There will be two new stations as part of the build of the underground rail line linking Britomart with the existing western line near Mt Eden.
The tunnels and stations contract will be procured using a design and construct model with a lump sum price based on a bespoke contract.The tender documents cover:
- Aotea Station - cut and cover construction of a 15m-deep, 300m-long underground station and plant room box, including platforms, lifts and escalators to street level, plant rooms and full station fit-out;
- Karangahape Road Station - mined construction of a 32m-deep underground station, including platform tubes and 150m-long platforms, lifts and escalator to street level, plant rooms and full station fit-out;
- Tunnels - twin-bored tunnel construction (circa 7m diameter) between the Mt Eden station and the southern end of Aotea Station;
- The provision of maintenance services for the new stations.
The latest tender announcement comes a fortnight after expressions of interest were sought for design, procurement, installation and commissioning of all tunnel track work and rail systems between Britomart Station and the Western Line at Mt Eden.
CRL project director Chris Meale said that as well as the tenders rolling out for future construction, current works are well under way.
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