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Wellington Northern Corridor

Updated: 4 May 2015

The Wellington Northern Corridor Improvements will ensure the SH1 route between Wellington Airport and north of Levin provide safe, efficient and reliable travel that communities and businesses can rely on to grow and prosper.  The Improvements are being constructed across eight different sections.

Aerial view of Peka Peka. Aerial view of MacKays crossing. Te Puka.

Two steps forward for Wellington Northern Corridor

02 December 2013

Schematic map

Wellington Northern Corridor phase map. Otaki to north of Levin section. Peka Peka to Otaki section. MacKays to Peka Peka section. Transmission Gully. Aotea Quay to Ngauranga section. Terrace Tunnel improvements. Tunnel to tunnel section. Airport to Mt Victoria tunnel section.


The Wellington Northern Corridor largely follows the current state highway route from the airport to Linden, near Tawa.  From Tawa new roads will progressively be constructed to provide an expressway-style journey to north of Levin.

The Corridor is made up of eight different sections and will provide for at least two lanes of traffic in either direction divided by a central barrier. Access to communities along the route will be provided for by a number of different connections, including at grade intersections (ie Wellington’s CBD) to elevated interchanges and overbridges.

Work is being progressed concurrently across the sections in order to complete the project as soon as practicable.  This means that work may be happening in Wellington and the Kapiti Coast at the same time.  Construction is being managed to limit disruption.

All the improvements are designed to help connect people to employment, education, services and recreation and will help people get around, to and through the region, allowing them to spend more time of the things they want to do.


The Wellington Northern Corridor Improvement will, when completed:

  • Support Wellington’s growing population: the regional population is expected to increase by 80,000 over the next 20 years, mainly in Wellington City and Kapiti
  • Support increased freight volumes in the region: there will be a 50% increase between 2007 and 2017, with the vast majority of movements by truck
  • Improve access to Wellington’s port, CBD, airport and hospital
  • Reduce severe congestion on state highways and local roads
  • Make travel safer
  • Make journey times more reliable
  • Make the highway more resilient to crashes or natural disasters by providing viable alternative routes and constructing roads that can recover quicker from natural events

A number of other additional benefits have also been identified.  These wider economic benefits include 865 extra permanent jobs in the region and a further 8000 construction jobs created to construct the Wellington Northern Corridor.  Businesses will also benefit with outputs and productivity improved as a consequence of businesses being located closely to each other.


The individual sections of the project are at the stages listed below:

Section Stage
Mt Victoria Tunnel Assessment of Environmental Effects
Tunnel to Tunnel Inner City Transport Improvements
- Basin Bridge Appeal to High Court due to be heard
- Memorial Park Underpass Construction completed
- ICB Improvements Construction
Terrace Tunnel Improvements Investigation
Aotea Quay to Ngauranga Stage 1 completed, Stage 2 Investigation and Design
Linden to MacKays (Transmission Gully) Design
Kapiti Expressway
- MacKays to Peka Peka Construction
- Peka Peka to Otaki RMA Consents granted, detailed design commenced
Otaki to north of Levin Investigation

Information on Wellington Northern Corridor projects

More information on the Wellington Northern Corridor projects can be obtained through the following links: