Waka Kotahi NZ Transport Agency

SH25/SH25A Thames-Coromandel

4 March 2024


Overnight road closure on SH25A

SH25A will be closed overnight this Wednesday 6 March to allow our team to carry out some final works at our new bridge at Taparahi.

The closure is needed so our team can install a new rubber seal into one of the bridge joints which runs across the full width of the road. They will also install grates on the side drains along the eastern approach road.

The work is being done overnight to minimise disruption to road users, with the road closing from 9.30pm on Wednesday 6 March until 5.00 am on Thursday 7 March.

Detours will be via SH25 along the Thames coast and Coromandel township or via SH26/SH2/SH25 through the Karangahake Gorge, Waihi and Whangamata. Access for local traffic along SH25A will be maintained up the bridge from both the east and west, but crossing the bridge itself will not be possible during the closure.

Work to finish the restoration of SH25A at the Taparahi worksite is expected to be completed by the end of March. SH25A was reopened just before Christmas in December 2023, three months ahead of schedule.



Overnight works at Whiritoa Hill

Our maintenance contractors are resealing a section of SH25 near the Whiritoa Hill summit overnight this week.

Traffic management will be in place between 8pm and 5am and motorists should expect waits of up to 30 minutes at a time. 

The work is expected to take one to two nights to complete, and depending on weather will be done between 3 March and 7 March. 

Temporary speed limits will be in place after the work is completed while  the new seal beds in and line markings are completed.



Reminder – Friday road closures at Ruamahunga

On Friday 8 March and every following second Friday, there will be rolling 20-minute road closuresbetween 12 noon and 2pm on SH25A at Ruamahanga. These are needed so a helicopter can deliver supplies for our team working to stabilise the slip.




Coromandel state highway recovery programme

Work to repair to damage caused by last summer’s extreme weather events continues at several sites across Coromandel’s state highway network.

While the slip which closed SH25A was the most significant, there were another 50 major slip sites and further damage caused by surface flooding at multiple locations across the wider network.

This work will continue throughout 2024 – the map below shows where the work will be done over the next three months.

These works will cause delays for road users and we will monitor impacts so we can achieve the right balance of speed of delivery against disruption to road users.



More information


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

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