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April 2025

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Project update

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With the first quarter of the year behind us, the team are focused on finishing the installation of concrete louvred screens ontop of the vertical seawalls and preparing for the first bridge column to be delivered. 

Last month, NZTA Waka Kotahi and KiwiRail safety regulators also gave the digital shield a tick of approval. The use of this digital innovation on the project demonstrated its capabilities to protect the rail, passing trains and heavy machinery onsite from ever coming into proximity with each other.

For more information, please see below.

Picture on right: Concrete louvred screens being installed

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Video on how the digital shield works to protect the rail and our people.

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Construction update

Construction in a rail corridor brings an element of risk, which is a constant consideration for the team delivering Te Ara Tupua.

Last month, NZTA Waka Kotahi and KiwiRail safety regulators gave the digital shield the tick of approval, confirming that the use of this Kiwi ingenuity on Te Ara Tupua demonstrated its capabilities to protect the rail, passing trains and heavy machinery onsite from ever coming into proximity with each other.

Using GPS and 3D models to create virtual ‘no-go’ zones, it enables a person to operate heavy machinery while the rail corridor is still operational. The shield prevents a machine such as an excavator from coming too close to real-world hazards and protects its drivers from overhead power lines and other sensitive areas such as the live rail corridor. The controls of the excavator lock up if any part of the machine gets too close to this zone.

This industry-leading technology was developed in collaboration with KiwiRail and Downer New Zealand on a rail project between Trentham and Upper Hutt. KiwiRail piloted the technology to enhance safety during rail construction which would prevent machines from hitting hazards like overhead power lines or trains.

Please watch the Digital Shield video above.

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Seawall update

With 2.7km of sloping coastal defenses and 6 vertical seawalls required for Te Ara Tupua, to-date we have installed:

- 4,879 out of 6,700 interlocking concrete blocks

- 2,663 out of 2,899 vertical seawall blocks

- 84 out of 336 concrete louvred screens

Image above: installation of concrete louvred screens on top of vertical seawall blocks

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Chimney Drains

To minimise water collecting on the rail track and surrounding area which fell through the crushed rock and gravel beneath the railway tracks, heavy duty bags were filled with gravel to create 470 vertical filtration systems which are placed inside the drains. Using a funnel system that allows the gravel bags to be attached and filled efficiently has reduced crucial construction timeframes to complete the drains underneath the shared path.

Image above: funnel system prototyped by the project team.

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Bodhi digging in and helping ecologists relocate blue mussels away from construction area.

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People behind Te Ara Tupua

Meet Bodhi, one of our project communication stakeholder advisors.

After four years of tertiary education studying Psychology, Criminology and Mātauranga Māori, he joined Te Ara Tupua Alliance, bringing his passion for Te Ao Māori into infrastructure project communications.

"The opportunity to be involved in a project with rich cultural history and significance to Te Āti Awa Taranaki Whānui & Ngāti Toa Rangatira is an honour. Being a part of a team that is actively committed to driving both cultural and social outcomes for our people and the wider community is a privilege."

Bodhi is the project conduit to schools and the community, being actively involved in promoting Te Ara Tupua, sharing the cultural significance of this area, encouraging career pathways and opportunities for ākonga, all the while connecting them to take part in the mahi of community groups such as Friends of Petone Beach.

Last year, he paved the way for eleven schools to experience what a construction project environment really involved. Knocking down common stereotypes that the construction industry was 'just building roads', ākonga had the opportunity to learn about the mana whenua partnership, the journey to integrate cultural design with engineering and ecology which resulted in Te Ripowai; the ecologically enhanced interlocking concrete block designed by iwi artist Len Hetet, and the merging of western science and mātauranga māori for the monitoring of the enhanced reef.

Ka pai tō mahi, kia kaha tonu! Well done and keep up the great work Bodhi.

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About us

The Ngā Ūranga ki Pito-One section of Te Ara Tupua is a project to provide better resilience to transport links between Wellington and Lower Hutt, with new walking and cycling choices.

It has been developed in partnership between NZ Transport Agency Waka Kotahi, Taranaki Whānui ki Te Upoko o Te Ika and Ngāti Toa Rangatira, alongside local councils.

It is being delivered by Te Ara Tupua Alliance, made up of Tonkin + Taylor, Downer NZ, and HEB Construction. 

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More information

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For more information on the Te Ara Tupua project, contact us at TeAraTupua@nzta.govt.nz

Visit our website www.nzta.govt.nz/TeAraTupua

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