land surveying and testing
land surveying and testing

Transmission Gully Motorway

Client/s: Downer NZ

Location: Pauatahanui, NZ

Services: CMT & Geotechnical

Construction Sciences Unit:
Wellington, NZ

Project Manager:
Zack Flood

Project Description:

The Transmission Gully motorway project is being delivered as a Public Private Partnership (PPP) by Wellington Gateway Partnership in partnership with the New Zealand government. A key part of the Wellington Northern Corridor, the project is one of the most significant single pieces of new road construction in the lower North Island

Built to demanding specifications, the design and construction of the Transmission Gully motorway reflects the need for another route between Wellington and the lower and central North Island that will be safer and more reliable for motorists and better able to resist and recover from earthquakes and storms. The project is highly complex, with difficult and steep terrain requiring large-scale earthworks during construction of the project. The 27 kilometre four-lane motorway will re-quire twenty-five new structures equating to a total length of more than a kilometre width. The largest of these, the Cannons Creek Bridge, will stretch 230 metres in length and sit 60 metres above the valley floor.


Our Role:

Construction Sciences have established a lab in Wellington, New Zealand for the past four years, we have conducted all Earthworks testing for the Transmission Gully (TG) project and have now moved into pavements testing as well. The road is expected to be completed and opened to the public in September 2021. The Construction Sciences NZ Team have not only delivered a high level of service to the TG project, but developed professional relationships with other NZ construction companies in order to develop on-going business opportunities and presence here in New Zealand.