Three Options Identified for Restoration of SH25A

Written by on February 24, 2023

NZTA say that while a solution is still being worked on, the final resolution is around nine to 12 months away before State Highway 25A is fully re-opened in the Coromandel. During this time people will still be able to enjoy their favourite holiday destination by taking alternative routes and enjoy the scenery on offer. For the reinstatement of SH25A the options have been narrowed.

“There are three main options for reinstating this highway. One – we build a bridge replacing the lost section of road; two – we build a deviation which bypasses the slip site; three – we build a retaining wall and effectively rebuild the road from the ground up,” says Regional Manager of Infrastructure Delivery, Jo Wilton.

“We don’t know which option is most feasible yet. The right solution cannot be established until the geotech work is complete. We know the rebuild must be resilient and as timely as possible. We understand how critical this highway is for Coromandel residents, businesses, and visitors,” Ms Wilton says.

Geotechnical engineers are continuing their critical assessments. There has been some further deterioration of the slip site following Cyclone Gabrielle. Some cracks across the road near each edge of the slip have widened, but there has been no further movement at this stage.

“The Hikuai side of the slip is high and possibly unstable. Assessment of the stability of this slope is underway.

“The next step is to construct a temporary track, to allow access for a geotech drilling rig up to the site of a potential deviation above the slip area. We also need to form another access track to the base of the slip where a retaining wall could be founded, but the ground is too wet to do this yet. Until we can get a rig in – we can’t get significant testing done.

“Our current focus is to build the tracks so the geotechnical assessments can be completed. It is anticipated these tracks will be in place in approximately two weeks – subject to the weather,” Ms Wilton says.

SH25A was closed on Friday 27 January to ensure the safety of road users, following the formation of deep cracks in the road after Ex-Cyclone Hale. The cracked section of the road at the summit slipped away during the Auckland Anniversary storm event.

It was the preferred route across from the Kopu side and its unavailability has added time and impacted businesses on both sides. Thames businesses say they are missing the businesses from those residents on the eastern side of the Peninsula who would frequently come to Thames for hospital visit and shopping. Businesses in the eastern seaboard towns are also missing visitors who have been reluctant to make the trip due to the additional travel time.

Campaigns on both sides of the Coromandel are underway and with coming attractions like Beach hop, A Taste of Matarangi, Kubota Billfish Competition, Whitianga Run Fest, Pauanui Half Marathon and Waka Ama the number of visitors will bring a late summer bump for local businesses.

Reader's opinions
  1. Patricia Leonard   On   February 24, 2023 at 7:55 pm

    I recommend putting a new road over the Neevsville road as it’s an old paper road to the other side and all on rock.

  2. Reece   On   February 24, 2023 at 8:14 pm

    Build a Deviation, as retaining walls are only as good as the sub structure holding them up . A bridge wouldn’t be anywhere near a reasonable budget

    • Sanderson Marina   On   February 25, 2023 at 10:54 am

      A Bailey bridge could be up in no time providing access can be achieved if the weather dries up. Timing is crucial. Speed is of the essence to be able to resume life and well being for residents first, then businesses and finally visitors and tourists.

      • P   On   February 25, 2023 at 3:12 pm

        What makes you think a Bailey bridge is possible!?

        This isn’t crossing a river, its around a corner on the top of a mountain!

        • Col   On   February 25, 2023 at 10:59 pm

          Couple of D9’s/D10’s and we could have a temporay deviation albeit gravel surface, in a couple weeks while final options are procrastinated about.
          Need to review taking the cheapest tender as well, usually chespest for a reason.
          Can’t believe how long things take to happen in this country.

  3. Kaye Ferguson   On   February 24, 2023 at 8:42 pm

    There seems very little will to fix the road in a timely manner and the suggestion that the other routes in are exceptable options. The begining paragraph is a clear signal that the closure of the road is not seen as important or considered the impact on the local economy. Hipkins talk about some roads not being replaced gives me little confidence in the governments determination to restore the road. It sounded very much like he would rather fewer people on the Coromandel. Maybe just a mecca for the rich who can fly in. I don’t have any view on which solution id best. The one that is going to last and be the fastes would be my pick. We are not a boarderline electorate so I doubt there will be little done to restore our economy. I would like to see the Auckland Coromandel ferry reinstated with coach/vans linked in the take people to Coromandel and Whitianga.

  4. Peter Ingerson   On   February 24, 2023 at 10:08 pm

    Coromandel had a private investor with land holding in Coromandel willing to stake their own money for a marine development and blue highway ( 2 return fast ferry trips per day from Coromandel ) but it was attacked by forest and bird as being detrimental to the harbor and eels.
    possibly 50 plus jobs for the region and the security of daily visitors gone.
    yep the investor walked after the provincial growth fund couldn’t fund a little and good old forest and bird squawked on about eel grass.
    the development was going to put all the fishing charters and ferries into Coromandel town and leave the sugar loaf for commercial.
    what a loss.

    • Kyron Bax   On   February 25, 2023 at 8:58 am

      do you think that maybe people move to coromandel for what it is .why is this world all about growth and expansion. coromandel town is beautiful for what it is you put in a marina and ferry service it will turn into a suburb of Auckland and will change what it is we love and who wants that? the rich…

      • Brian   On   February 28, 2023 at 9:58 pm

        Be better to get rid of m0r0ns who don’t know what they are talking about, and don’t understand science. Who do you even think these ‘greenies’ are and what do you think they are in charge of? 1080? Possums? What are you on even? BTW,` if governments had started listening to ‘greenies’ forty years ago, we wouldn’t have a climate crisis now, and this conversation about fixing a road (1080??? Possums???) wouldn’t even have to be had.

  5. Jason McQuinn   On   February 25, 2023 at 6:13 am

    four lane arterial routes ie state highway 1 etc…knock some holes through hills (tunnels) for essential routes and toll them until funded ie holiday traffic and tourists will cover the cost of infrastructure to maintain a safe route.

  6. Peter STOKES   On   February 25, 2023 at 6:33 am

    It was obvious from day one that these were the three options. It is also obvious that a deviation around the slip is the most economical therefore the only option.

  7. Friend of eastern side residents   On   February 25, 2023 at 8:45 am

    There has been little consideration of the people (adults and children) who live on the eastern side and would commute daily both ways for work and school. It’s just not Bach owners or visitors that are effected.
    Get off your butts and cut the corner and build a new road.

  8. Michael Shane Thomsen   On   February 25, 2023 at 8:47 am

    As a local in Thames it needs to be open asap.
    I’ve been to Norway it’s unbelievable what they have done in their mountains re infrastructure.
    I suggest this government need to look what others have done around the world.

  9. Neil Baker   On   February 25, 2023 at 9:42 am

    I don’t see any investigation or drive to implement a vehicle and passenger ferry To coromandel? Surely must be a viable strong consideration?

  10. Nigel   On   February 25, 2023 at 10:27 am

    I would say that your comment “the one that would last and be the fastest” is a contradiction of terms. Be patient, the Geotechnical assessment process will take time and that’s once they can get drilling equipment in to take core samples.

  11. Shaun Mason   On   February 25, 2023 at 1:54 pm

    Put temporary pass Aron’s the slip while cutting in a road from Kirikiri no2 bridge following the stream to the south until the stream heads due south. Then cut a tunnel (approx 5km) through to one ton straight. That will cut out most of the problematic parts of the road. Maybe the gold found while doing it could contribute to the costs 😉

  12. Warren   On   February 25, 2023 at 3:36 pm

    Get overseas experts in to repair the road with a deviation around the slip and pay a toll to cover the cost. Waka wankers will take years to come up with a solution

  13. Farmer John   On   February 25, 2023 at 7:05 pm

    Well the longer we sitt around I must be old school just get the gear up there and get a bypass cut retain pile the outside edge just under the new road edge . Go 24/7 90 days ready for seal winter rains
    are coming .People lively hoofs are at stake . Even if it becomes a toll road

    • Bruce Henty   On   February 26, 2023 at 7:42 am

      waaka would not know the meaning of 24/7.they do know how to spend a fortune on consultants engineers and then the greens might find some insects.

  14. David Miller   On   February 26, 2023 at 4:28 am

    The road wherever it goes will need to be engineered properly to provide a sound solution. This section of the road has obvious drainage issues that can be solved with careful analysis of the geostructure. No one (including “the Waka wankers”) wants to see another “goat track” replacement policy envoked here. There IS a serious initiative by the government agency to restore this road in the most cost effective and efficient manner possible but it must have permanence and safety as its overarching goal. Which ever option is chosen it will be expensive and unfortunately will take time, Reality.

Leave a Reply

Your email address will not be published. Required fields are marked *

Current track