Construction begins on country’s highest road bridge

RNZ
The viaduct would be the highest road bridge in the country, sitting 65m above the river. Photo / NZTA
The viaduct would be the highest road bridge in the country, sitting 65m above the river. Photo / NZTA

By Alexa Cook of RNZ

The first sod has been turned on a 260m-long bridge on State Highway 2 that will stretch across Waikare Gorge between Napier and Wairoa.

Once constructed, it would be New Zealand’s highest road bridge, replacing a temporary one-lane Bailey bridge that had been there since Cyclone Gabrielle destroyed the old bridge in 2023.

A bridge over the gorge has been talked about for two decades, but it was the destructive cyclone that finally resulted in the proposal becoming a project.

There is no chance of the new bridge washing away, as Rob Partridge from the NZ Transport Agency told RNZ the viaduct would be the highest road bridge in the country, sitting 65m above the river.

“It’s a unique bridge and it’s a unique gorge. It’s about 260 metres long and is a truss bridge, it’ll span a little bit more than the gorge so we can avoid some of the geotechnical and geological issues on the edges.

“It’ll be quite an impressive sight,” he said.

And although it’s expected to take four years to build, Partridge reckoned they might be able to shave some time off that.

A one-lane Bailey bridge was installed after Cyclone Gabrielle washed away the old bridge in 2023. Photo / RNZ, Alexa Cook
A one-lane Bailey bridge was installed after Cyclone Gabrielle washed away the old bridge in 2023. Photo / RNZ, Alexa Cook

“We’ve got a really good construction team on board and I’m relatively confident that they’ll be able to exceed expectations there and bring this in a bit earlier than the four-year timeframe we have for construction,” he said.

Getting to this point had taken years of negotiations with the five landowners whose properties the road would cross. Ben Mackintosh’s family had been farming in the area for over 100 years and he said the new road would cut straight through the middle of his best pasture growing paddocks.

“It’s going to be a pain in the ass. During construction it’ll be quite a nightmare.”

That’s because of the 205ha of his dairy farm, about 27ha would be used to build the road over the next four years. It would disrupt his dairy farming operation and he’s planning to drop down to once-a-day milking because the cows would have to walk further and graze steeper, tougher country.

The new Waikare Gorge road goes right through the middle of Ben Mackintosh's dairy farm. Photo / RNZ, Alexa Cook
The new Waikare Gorge road goes right through the middle of Ben Mackintosh's dairy farm. Photo / RNZ, Alexa Cook

“We don’t really want it through the farm, but it’s got to be. We can’t stop it.

“I can see why other people want it. We’ll just do what we can and move on,” he said.

He could appreciate the benefits to the region and to farmers on the north side of the gorge, as the road was used by thousands of trucks and cars every day.

Wairoa District councillor Jeremy Harker said the new bridge was a big win for the whole of the East Coast.

“It’s also going to be good for the economy with Affco, our apples, forestry ... all this stuff that comes out of Wairoa.

Wairoa District councillor Jeremy Harker said the new viaduct was great for the Wairoa economy. Photo / RNZ, Alexa Cook
Wairoa District councillor Jeremy Harker said the new viaduct was great for the Wairoa economy. Photo / RNZ, Alexa Cook

“It connects us to the coast, to Gisborne and Tairāwhiti, up through Ruatoria and Waioweka Gorge ... it just makes it a smoother, easier, better trip,” he said.

Transport Minister Chris Bishop said the cost of the project had been reduced.

“A focus on ensuring the project delivers value for money; it was initially costed at $350-$425 million in February 2025 but that had dropped to $275-$325m thanks to competitive tender pricing, design innovation of the bridge structure and mitigation of some key risks.

The first sod being turned by Ngati Pahauwera Trust chairman Toro Waaka, Maungaharuru-Tangitu Trust CEO Adele Small, MP Dana Kirkpatrick, MP Katie Nimon and Wairoa District councillor Jeremy Harker. Photo / RNZ, Alexa Cook
The first sod being turned by Ngati Pahauwera Trust chairman Toro Waaka, Maungaharuru-Tangitu Trust CEO Adele Small, MP Dana Kirkpatrick, MP Katie Nimon and Wairoa District councillor Jeremy Harker. Photo / RNZ, Alexa Cook

“It’s an exciting day for Hawke’s Bay, with realignment of this vital East Coast highway creating jobs during construction and providing an efficient, safe and reliable road.”