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Kia ora and welcome to the latest newsletter on Te Ahu a Turanga: Manawatū Tararua Highway project, the proposed new route to connect the Manawatū, Tararua District, Hawke’s Bay and northern Wairarapa, replacing the closed State Highway 3 Manawatū Gorge route.

A Te Reo Māori version of this newsletter will be made available soon.

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Join us at an information session near you

We’re looking forward to sharing the latest project updates at a series of public information sessions in March.

Please join us at one of the following:

10 March – Dannevirke (Dannevirke RSA, 1 Princess Street, Dannevirke, 4.00pm to 6.30pm)

11 March – Ashhurst (Ashhurst Village Valley Centre, Winchester St, Ashhurst, 4.00pm to 7.00pm)

12 March – Palmerston North (Hancock Community House, 77-85 King Street, Palmerston North, 4.00pm to 6.30pm)

17 March – Pahiatua (Pahiatua Town Hall, Cnr Main St and Kiwi St, Pahiatua, 4.00pm to 6.30pm)

18 March – Woodville (Te Ahu a Turanga Marae, Tay Street, Woodville, 4.00pm to 7.00pm)

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See you at Field Days!

We’ll also be presenting the latest on the project to visitors at Central District Field Days in Feilding from 19 to 21 March. We hope to meet you there!

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What's in the soil

We have now completed more than a third of ground investigations along the road alignment.

This is important work to understand the properties of the soil and rock to determine the most appropriate methods for the cuts and fills needed to construct the highway.

Right now three geotechnical rigs are operating (as per photo below), drilling boreholes ranging from 10 to 70 metres deep. More than 500m of vertical drilling has been completed to date, along with 43 test pits to a depth of up to 4m. The test pits assess the near surface materials to determine what can be re-used or removed during construction.

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Ground investigations image

 
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Notice of Requirement and consents

We are continuing with work to resolve outstanding appeals to the Notice of Requirement for the transport corridor designation, while at the same time finalising our resource consent applications.

Both designation and consenting is required before construction can commence.

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Design and construction

Over the last six months the project’s design team have completed the concept design and are working closely with the construction team to finalise the build programme.

The concept design and programme detail how the highway will be constructed, what areas we’ll be working in and when, how the earthworks and bridges will be staged and how we’ll manage the environment around us.

Did you know?:

  • The project involves 40 major culverts ranging in size and length from 10m to 180m
     
  • Required earthworks exceed 5.5 million cubic metres
     
  • The project includes the construction of nine large stormwater treatment wetlands
     
  • The main types of soils over the project include mudstone, conglomerate and alluvium
     
  • The span of the new bridge over the Manawatū River will exceed 300m (see rendered image below)
     
  • There are currently 10 ecologists on the project completing stream and habitat assessments to support the upcoming resource consent application
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A rendered image of the bridge over the Manawatū River

 
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More information

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For more information on the SH3 Manawatū Gorge replacement route, contact us at teahuaturanga@nzta.govt.nz

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

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