Technical Visits

Central Interceptor

Thursday 9th November

$75 per person  |  9.30am – 1.00pm

  • Visit Watercare’s Central Interceptor (CI) project currently being built by Ghella Abergeldie JV in Tāmaki Makaurau (Auckland) to collect stormwater and wastewater overflows.

  • The CI tunnel is 4.5 metres in diameter and will run for 14.7 kilometres from Grey Lynn under central Auckland and the Manukau Harbour to Māngere. The tunnel will lie between 15 and 110 metres below the surface.

  • Along with two smaller link sewer tunnels we are building, the main CI tunnel will collect wastewater from the existing network and take it to the Māngere Wastewater Treatment Plant.

  • Spend the morning learning about the project, visiting the main pump station shaft (26 m ID) and inlet shaft (12 m ID) at our Māngere site where the 4.5 m TBM ‘Hiwa-i-te Rangi’ was launched in August 2021. Attendees will be able to enter the inlet shaft and inspect the start of the Central Interceptor 41 m bgl and finish the morning off with a lunch.

  • Further details of the day will be sent out to all attending.

Note numbers are limited and further details will be provided to all attendees closer to the time.

Please register for the CI site visit by the 1st November to ensure we can cater for all attending.

PPE and steel capped boots are mandatory, but can be provided if required.

City Rail Link

Thursday 9th November

$75 per person  |  9.30am – 1.00pm

  • The City Rail Link is the largest transport infrastructure project to be undertaken in New Zealand.

  • It allows the Auckland metro rail network to at least double rail capacity. Rail transport growth statistics suggest that by 2035, CRL stations will need to cope with 54,000 passengers an hour at peak travel times.

  • The CRL is a 3.45km twin-tunnel underground rail link up to 42 metres below the city centre transforming the downtown Waitematā Station (Britomart) into a two-way through-station that better connects the city’s rail network, connecting with a redeveloped Maungawhau Station (Mount Eden) on the Western Line.

  • New underground stations will open up city access at Karanga-a-Hape and Te Waihorotiu (Aotea).

  • With an estimated total cost of approximately $5.5bn, the project has an expected completion date of November 2025.

  • The main works are being delivered by the Link Alliance, a consortium made up of City Rail Link Ltd (CRLL), Vinci Construction Grands Projets S.A.S, Downer NZ Ltd, Soletanche Bachy International NZ Limited, WSP New Zealand Limited, AECOM New Zealand Limited and Tonkin + Taylor Limited.