SH25/SH25A Thames-Coromandel

20 October 2025

Mark your calendar - road closures ahead

SH25 Boundary Creek Bridge, Thames Coast
Closed for 7 days from 5am on Wednesday 29 October

SH25A Kōpū-Hikuai road
Daytime closures (8am-5pm) for 2 weeks from Monday 10 November

SH25 Moana Anu Anu Bridge Whangamatā
Closed from Wednesday 29 October for 6 weeks

Contractors at work beneath Boundary Creek Bridge, pictured left, and new bridge deck panel ready to be delivered to site

Boundary Creek repairs - road closes next week

Work to repair Boundary Creek Bridge on SH25 has started well with most of the action taking place beneath the bridge.

The coastal highway remains open as our contractors tackle the first phase of the project – strengthening and repairing the bridge supports.

SH25 will then close for 7 days at 5am on Wednesday 29 October.
During this time the team will demolish the old bridge deck and lift the new one into place.

The bridge has been reduced to a single lane since 2023 due to its poor condition – the coastal environment has contributed to deterioration of the reinforced concrete supports and beams.

Tucked away out of sight under the bridge, our contractors are busy drilling hundreds of holes into the concrete abutments that support the bridge, ahead of installing new reinforcement bars and increasing the abutment thickness.

Meanwhile the new bridge deck panels are being assembled ahead of being transported to site. 

Once the new bridge deck is installed, the road will reopen to single lane traffic while finishing works are completed.

By December, the state highway will be restored to 2 lanes and the neighbouring passing bay reinstated.

There is not much room to move on the SH25A worksites - hence the need for daytime closures.

SH25A day closures from 10 November

Once the Boundary Creek Bridge site reopens, attention will shift to the 2 weeks of daytime closures for SH25A.

Major road rebuilds are needed at 2 locations that are steep and narrow and the work can't be done safely with traffic running through the worksites.

Here’s what you need to know:

• The closures will run for 2 weeks from 10 November, Monday to Saturday

• SH25A will close each day between 8am and 5pm, opening in the evenings under stop/go and on Sunday 16 November

• The 8am closure points will be at each end of SH25A, at Kōpū and near Hikuai. If you are on SH25A by 8am you will get through the work sites before the daily closures

• The detour using SH25/SH2/SH26 adds about one hour to travel times.

Megan Nunn from Destination Hauraki Coromandel

Helping to keep Coromandel visitors informed

Planned road closures in the month ahead have seen Destination Hauraki Coromandel swing into action to help tourism operators and their visitors.

“We are keeping the local tourism and hospitality operators informed through all our channels – so we are reaching local, national and international travel sellers,’’ says Destination Hauraki Coromandel marketing manager Megan Nunn.

“We also work closely with Thames-Coromandel and Hauraki district councils and of course the NZ Transport Agency Waka Kotahi, which is doing the work.

“Road works are always disruptive, but we need to maintain and improve roads and connections, particularly as tourism is so crucial to this region.’’

Megan says by sharing the information early, international travel planners can adapt their itineraries and encourage the industry to showcase alternative routes.

“The SH25A daytime closure for 2 weeks in November means it’s an extra hour’s travel but the alternative route includes some stunning coastline and landscapes, with the option to stop and enjoy iconic attractions along the way.’’

Destination Hauraki Coromandel is the regional tourism organisation funded by Thames-Coromandel and Hauraki district councils. Tourism contributes more than $500 million annually to the local economy and is one of the region’s largest employers.

Whangamatā bridge detour ahead

A reminder for SH25 travellers that the bridge work near Whangamatā starts after Labour Weekend.

Urgent deck work is needed on the Moana Anu Anu Bridge (also known as the Wentworth Bridge) on SH25, southwest of the town.

The bridge will be closed to all traffic, including pedestrians and cyclists, from Tuesday 29 October to about Tuesday 9 December. The closure runs 24/7.

The repairs include a full deck replacement, new safety barriers, resurfacing and other work which can be done during the closure.

The detour through Whangamatā will use Mayfair Avenue and Martyn Road, adding only a few minutes to normal journey times.

A 2-lane replacement is planned for the Ramarama Stream Bridge.

Land needed for Ramarama replacement

NZTA is looking to remove another SH25 bottleneck by replacing the single-lane Ramarama Stream Bridge north of Whiritoa.

A new bridge will be built just to the east of the old one – so that will continue taking traffic while the new one is built. Building further east also lessens the curves on to and off the bridge, improving the ride and increasing safety.

The pre-implementation phase, incuding design work, preparing the construction specifications and obtaining resource consents from Waikato Regional Council are 95 per cent complete and the team is continuing to work through property matters.

Timeframes for construction will be advised once the land acquisition process has been completed.

The Ramarama Stream Bridge replacement is part of a wider bridge programme to improve safety, efficiency and resilience on the state highway around the peninsula.

The programme includes the new deck and upgrade to the Boundary Creek Bridge on the Thames Coast road now underway, and a new 2-lane bridge to replace the single-lane Pepe Stream Bridge at the southern entrance to Tairua, with construction beginning there in late 2026.

Brian Perry Civil's innovative work at Pumpkin Hill has earned an award.

Pumpkin Hill slip repair work recognised in awards

The work completed earlier this year to repair the large underslip on Pumpkin Hill has been recognised with an industry award.

Brian Perry Civil won the award for projects valued between $1m and $5m at the Bay of Plenty Hynds Construction Excellence Awards last week.

Their work was described as “a well-executed repair achieved below budget and ahead of schedule’’.  The judges also noted the contractor’s “innovative methodologies” and “smart redesigns, efficient planning, tight cost control and excellent communication”.

Take a bow team – we love your work.

SH25 speed review

The analysis of the submissions for the speed review consultation is nearing completion. We were pleased with the response received and would like to thank everyone who made a submission.

The Consultation Report will be considered along with all other technical data, and a recommendation made to the Director of Land Transport for the final decision.

We are progressing this as fast as we can, as we hope to have a decision before Christmas.

More information

For more information on the SH25/SH25A Thames-Coromandel project, contact us at coromandelprojects@nzta.govt.nz

Visit our website www.nzta.govt.nz/thames-coromandel