SH2 Waikohu Bridge before and after. Rock revetment (protection) work was undertaken beneath Waikohu Bridge 3 to protect the asset from impacts of the river. Similar work has also been completed at Waikohu Bridge 2. Photo / NZTA
SH2 Waikohu Bridge before and after. Rock revetment (protection) work was undertaken beneath Waikohu Bridge 3 to protect the asset from impacts of the river. Similar work has also been completed at Waikohu Bridge 2. Photo / NZTA
Almost 80% of the funded projects to repair cyclone-damaged Tairāwhiti state highways have been completed, with several major projects set to start in 2025.
The Transport Rebuild East Coast (TREC) alliance has been carrying out Cyclone Gabrielle recovery work, on behalf of NZ Transport Agency Waka Kotahi (NZTA).
TREC hasbeen working to restore two-lane access on the state highway network throughout Tairāwhiti and Hawke’s Bay.
According to a statement from NZTA, the Tairāwhiti recovery programme includes about 170 projects or faults to be fixed across the 500km network of State Highway 2 and State Highway 35.
Of those, about 140 projects have now been completed.
“The priority was always to focus on the most severely damaged sites first to ensure the highways stayed open, then move on to smaller sites that could be completed quickly,” TREC project manager Richard Bayley said.
“We’ve achieved a lot this year and we’d like to acknowledge local contractors who have delivered great results on our projects across the state highway network.”
Bayley said about 80% of TREC’s East Coast recovery construction work was delivered by local contractors.
SH35 Oweka before, during and after repairs. A buttress has been built to restore the road shoulder and bring it back to road level. Photo / NZTA
“Together, we’ve repaired numerous underslips, improved drainage, cleared silt from streams, and restored sections of highway back to two lanes,” he said.
He thanked iwi and hapū who work closely with TREC, and expressed appreciation for the support and patience of road users and local communities during the work.
“We know roadworks can be challenging and we really appreciate your patience and care when adjusting to new road layouts, temporary lower speeds or road closures. This helps us keep you, other road users and our crew safe – particularly on those sites where there is very little room to work or move,” Bayley said.
“Thanks to people’s support, we’ve been able to deliver a much more resilient highway network as we move into the busy summer holiday period.”
In 2025, TREC will focus on larger and more complex projects such as Hikuwai Bridge No 1, additional improvements in the Mangahauini Gorge and upgrades to prevent flooding at Nesbitt’s Dip and Rototahe.
“We expect to start construction on these sites early in the new year after we complete detailed design work, which includes working with iwi and hapū, landowners and council.”
Most road works will stop over the holiday period, from noon Thursday, December 19 and resume on Monday, January 6.
Early next year will be busy, with new TREC recovery projects starting and the NZTA annual renewals programme continuing.
“We encourage everyone to plan their journeys and check the latest traffic updates at journeys.nzta.govt.nz to stay informed on road conditions.”
Before and after views of SH35 Mangakuri Stream Bridge. The bridge abutments and embankments beneath the Mangakuri Stream Bridge were damaged by the impacts of the stream. Rock revetment (protection) work was undertaken to protect the bridge from future impacts of the surrounding waterways. Photo / NZTA
Complete projects on SH2
Scour protection and rock revetment at Waikohu Bridge #2
Underslip repairs at Otoko Hill slip #1
Soldier pile wall installation on Otoko Hill
Waikohu Bridge #2 and #3, Wairakaia Bridge, Maraetaha Bridge No 5 and Tauwhatinui Bridge have had various levels of protective work undertaken, such as rock revetment (protective) work - essential to reducing future impacts of river erosion on bridges and the land it stands on.
Projects for 2025:
Completing recovery work on Otoko Hill. These include finishing repairs on a major underslip using hillside stabilising methods such as shotcrete and soil anchors; installing drainage at several sites to help channel water away from the road and strengthening an existing retaining wall.
Nesbitt’s Dip flood protection. The state highway will be raised and the drainage will be upgraded to reduce closures due to flooding.
Matawai Rd and Rakauroa. Work here will help to stabilise the hillside.
Completed projects on SH35
Buttress construction and shoulder reinstatement at Ihungia Rd
Rock revetment work at Mangatuna Stream Bridge
Culvert improvement works at Mangatuna
Projects for 2025:
Hikuwai Bridge No 1 replacement. A single, two-lane bridge will replace the Hikuwai Bridge destroyed by Cyclone Gabrielle. Design will be at 50% early next year, with construction also to start in 2025.
Mangahauini Gorge further recovery works. The focus here will be on designs for work to stabilise slopes, repair river and road edges and upgrade culverts and drainage.
Rototahe flood protection. The state highway will be raised and the drainage will be upgraded to reduce closures due to flooding.
Awatere Gully underslip. A buttress (supporting) structure is being built at this location to repair an underslip caused by Cyclone Gabrielle. Road reinstatement will also be undertaken.
Kopuaroa slip 2. An underslip at this site requires soil nails and shotcrete (sprayed liquid concrete) to stabilise and rebuild the hillside.
Rotokautuku (Waiapu) Bridge scour repair and revetment. Rock revetment (protection) work is planned at this site to repair the area beneath the bridge from damage caused by Cyclone Gabrielle and also protect it from future erosion impacts of the Waiapu River.
Te Kura O Torere underslip. Work will involve underslip repairs with an anchored shotcrete wall and overslip repairs with reinforced earth walls and drainage improvements.
