Built to demanding specifications, this road is safer and more reliable for motorists, and better able to resist and recover from earthquakes and storms.
Twenty-five new structures equating to a total length of more than a kilometre have been constructed along the route. The largest of these, Te Ara a Toa (Bridge 20) over Cannons Creek, stretches 230 metres in length and sit 60 metres above the valley floor.
The $1.25 billion Transmission Gully motorway is a Public Private Partnership (PPP) – the first roading project to be delivered in this way. The Government’s PPP contract is with Wellington Gateway Partnership. This project is a key part of the Wellington Northern Corridor and is one of the most significant pieces of new road construction in New Zealand.
Public Private Partnership
Wellington Northern Corridor