When going through the City Rail Link business case for yesterday’s post, I left out one aspect I thought readers might be quite interested in, details about the stations being added or upgraded as part of the project. They say
Station entrances have been designed to address the needs of each station in terms of function, performance and personality, as well as the needs of the particular urban context into which they are to be inserted. Effort has been made in placing and configuring the above-ground components of the station entries and other station components to maximise local benefits. This included consideration of:
- potential for architectural treatments and materiality
- scale, massing and form
- activation of street frontages
- preserving important heritage structures
- transit oriented developments
- potential to explore inclusion of Iwi cultural landscape and design themes.
On to the details about the stations themselves, this is laid out in the the table below
Britomart will get three additional escalators but also lose one entrance. With a reduction to four platforms post-CRL I’m guessing some of the new escalators could relate to improving access at the eastern end of the station. As for losing an entrance, AT have said the gateline will be moved from the platform level up to the CPO so this might suggest the entrance out the back of the CPO could close.
Aotea will have a lot of escalators including about four sets to/from the platform. It’s also good to see them stating that the station is future proofed for a future North Shore line – which would be under Wellesley St. The only concern is that the platform is quite narrow at only 9.6m for what will be the busiest station on the network but I guess the various escalators will help somewhat in moving people.
The Karangahape Rd station platforms are a little narrower but the station isn’t expected to be quite as busy. In the post yesterday I highlighted how they expect up to 34,000 during the AM peak. The report suggests about 20% of that will go to K Rd while Aotea and Britomart get around 40% each. As a rough guess that seems about the same width as some of stations in other parts of the network. It’s worth pointing out that side platform aren’t really on the outside like other stations but more like two halves to an island platform with cross passages directly between them.
Of course it’s a shame that they’re not building the Beresford St entrance as that would make the station more useful.
If you’re interested in how the stations will be built, the info below gives some idea.
Construction for Aotea Station will be staged so that only one of Victoria Street, Wellesley Street and Custom Street West is closed at any one time. As Aotea Station is on the critical path, early enabling works to divert the stormwater culvert in Albert Street are planned to reduce the overall construction programme.
Components of the Station construction include:
- southern construction yard and shaft
- Wellesley Street West intersection structural works covering relocation of the street furniture and utilities, constructing the roof slab and reinstating the Albert Street/Wellesley Street intersection for public use, constructing the station box to platform level, the structures for the station entrance, ventilation, and mechanical and electrical equipment. The base slab at platform level will be designed to span the tunnel works for the future North Shore Line. This section of the station is on the critical path as it must be completed to receive the TBM from the first tunnel bore.
- Victoria Street intersection structural works covering the street furniture, utilities relocation, constructing the roof slab and reinstating the Albert Street/Victoria Street intersection for public use, construction of the station box to platform level from the adjacent section and the structures for thestation escape passage and entrance
- Durham Street intersection structural works including carefully removing the heritage bluestone wall (for reinstatement on completion), construction of the roof slab and reinstatement of the Albert Street/ Durham Street intersection for public use, and construction of the station box to platform level. This section of Aotea Station is on the critical path, as it must be completed before the rail track installation works can proceed to Britomart Station.
After completion of the tunnelling and structural works, the station will be accessible for fit-out.
The construction sequence for Karangahape station needs site preparation, service protection/diversion, and demolition of existing buildings followed by construction of the main entrance shafts, excavation of the sloped entrance escalator shafts, and construction of the permanent works after the mined tunnels have been completed. The Mercury Lane shaft must be completed before the down main TBM reaches this location. After completion of the tunnelling and structural works, the stations will be accessible for fit-out.