Constructing the Central Interceptor

The project is well underway

We have 16 construction sites along the tunnel route. Large construction sites will operate for three to five years, with smaller sites open for around 18-30 months. At sites where we are digging the shafts, we need to insert and remove equipment and materials. Most of the shafts will also connect to existing underground pipes, collecting their wastewater and transporting it to our Māngere wastewater treatment plant.


For more information on an individual site, click on the 'our sites' tile below the map.

Central Interceptor construction route map

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