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State highway projects

Our role in managing New Zealand's state highways includes working with the government and partners throughout the country to identify and respond to opportunities to improve safety, capacity and efficiency on our roads. One of our key goals is to support economic growth and productivity throughout New Zealand. Together, we develop projects based on thorough analysis and, where appropriate, extensive consultation to ensure they can be implemented cost effectively while delivering immediate and long-term gains to road users and the economy as a whole.

Currently active projects are listed below. For completed state highway projects, view the completed projects section in the navigation.

Updated: 15 September 2014

Johns Road (SH1) between The Groynes and Sawyers Arms Road is part of the Christchurch’s Western Corridor. Traffic volumes on the whole Western Corridor are increasing and this is expected to continue into the future. To improve travel times, efficiency and safety on this section of highway, it will be upgraded to a 4-lane, median separated highway.

Project update

Construction of this 2-2.5 year project will start on 15 September 2014 with a blessing and sod turning. The winners of the contract for this work – Downer with start work on site from this date on.

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Fast facts

  • Project type:
    • Roads of national significance
  • Project contact:
Building a higher standard, higher capacity road will help enhance economic development..

Updated: 12 September 2014

This project is to improve SH1 between Pūhoi and Wellsford in the northern Auckland region.

Please note that the dates below are for the Pūhoi to Warkworth section only

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Fast facts

Upper Harbour Highway to Greville Road Northbound improvements.

Updated: 9 September 2014

The Upper Harbour Highway to Greville Road Northbound 3-laning is the first project to start construction as part of the Government's accelerated programme of works to improve transport infrastructure in Auckland. This project forms the first stage of the Northern Corridor accelerated package of works which focuses on improving links to and from the Northern Motorway... more

Fast facts

  • Project type:
    • Roads of national significance
  • Project contact:
The existing intersection of SH1 and SH5..

Updated: 8 September 2014

A roundabout to replace the intersection of SH1 and SH5, just south of Tirau, is planned to be open for traffic in late spring 2014. The NZ Transport Agency awarded the contract for the four-legged roundabout to Schick Construction and work started in January 2014.. more

Fast facts

  • Project type:
    • Intersection improvement
  • Project contact:
An artists impression of how a same direction separated cycle lane on State highway 1 through central Dunedin might look like..

Updated: 1 September 2014

This Transport Agency are working with the Dunedin City Council on a proposal, involving using a separated cycle lane to increase cycle safety on the 2.7km section of State highway 1 through the Dunedin CBD between the Botanical Gardens and Queens Gardens.

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Fast facts

SH16 St Lukes Road to Great North Road.

Updated: 21 August 2014

Set apart from the five other projects that make up the Western Ring Route, the SH16 St Lukes Road to Great North Road upgrade project is jointly funded by the NZ Transport Agency and Auckland Transport.

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Fast facts

SH20A Motorway Upgrade to Auckland Airport.

Updated: 20 August 2014

SH20A is the primary route to and from Auckland Airport and forms a strategic link between the Western Ring Route (SH20 and SH16), the Airport Business District and the greater Auckland area... more

Fast facts

Updated: 15 August 2014

Curletts Road between Main South Road and Blenheim Road is an important link in the Christchurch and Canterbury transport network. Increased traffic numbers and changed traffic patterns since the earthquakes have increased traffic on this road to well beyond its capacity.

The aim of this project is to reduce congestion and queuing on Curletts Road between Main South Road and Blenheim Road, and on the surrounding streets.

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Fast facts

  • Project type:
    • Traffic management
  • Project contact:
Tauranga Northern Link will provide a route across the northern part of Tauranga..

Updated: 13 August 2014

A secondary investigation to review the design and scope of existing proposals for the route... more

Fast facts

  • Project type:
    • Regional development
  • Project contact:
Looking east towards Welcome Bay over the Maunganui/Girven intersection.

Updated: 8 August 2014

Formerly known as the Maunganui Girven intersection (MGI) improvements project, the Baypark to Bayfair link upgrade will provide improvements to the Te Maunga intersection to the Maunganui Road / Girven Road intersection.... more

Fast facts

  • Project type:
    • Intersection improvement
  • Project contact:

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