City Rail Link

The City Rail Link (CRL) is New Zealand’s largest ever transport infrastructure project. Having opened in September 2026, CRL enables more train services across Auckland with more frequent trains and shorter journey times.

KiwiRail works closely with Auckland Transport and Auckland One Rail to ensure that the rail network is in top shape to support increased passenger services. 

As the rail network owner, KiwiRail has ensured the new railway is fit for purpose. We provide technical support to CRL's ongoing operation and have delivered rail infrastructure upgrades across every line in the Auckland metro network. Here's how the passenger network looks post-opening:

KiwiRail's role and contributions to City Rail Link  

  • Ongoing maintenance of CRL rail infrastructure, including tunnels, signals and train radio systems. These FAQs outline how scheduled maintenance are carried out now the CRL is open
  • Tested the rail system as a whole to ensure it’s safe, reliable and for fit for purpose
  • Delivered the Auckland Rail Operations Centre, which brings together KiwiRail, Auckland Transport and Auckland One Rail together in one location to improve train services across the city
  • The completed electrification of 19km of extended overhead power lines between Papakura to Pukekohe, upgrades of Pukekohe Station and associated tracks. Passengers can now travel direct from Pukekohe to central city
  • Significant upgrades to track infrastructure at key junctions such as Waitematā, Maungawhau, Otahuhu, The Strand and Newmarket, including the building of a new South-West connection (see image at the bottom of this page)
  • New third rails at Wiri to Quay Park and Henderson for greater volumes of freight and passenger trains. This includes Henderson and Middlemore station upgrades and track reconfiguration around Quay Park, which allows freight better access to Ports of Auckland and new junctions at Westfield and Wiri. 
  • Two additional Auckland power feeds to boost electricity capacity and resilience and allow for future growth of the wider network. The Western Power Feed is operational and work will start later in 2026 on a second power feed on the South Central Line.
  • Opened two new stations in Drury, South Auckland - Drury Railway Station and Paerātā Railway Station, each with large park and rides. Ngākōroa Railway Station will follow in 2027.

Watch some highlights of the KiwiRail projects (2018 – 2028) enabling CRL.

Take a look at a video of the first train making its first trip through the CRL tunnels.

In addition, KiwiRail earlier in 2026 completed the five-year Rail Network Rebuild programme to replace old foundations, improve drainage and install new track structures. The rebuild future-proofs the wider Auckland rail network for decades to come, improving resilience and reliability and readying the tracks for the City Rail Link’s ongoing operation. 

This above diagram shows the new South-West connection KiwiRail has built at Newmarket junction.

For more information on the CRL, visit the City Rail Link website.