Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search


Repairs On Track To Open Mangamuka Gorge On SH1 By Christmas

Waka Kotahi NZ Transport Agency says it’s on track to open State Highway 1 through the Mangamuka Gorge before Christmas with the slip repair work entering a significant new stage.

The road will be open to light vehicles under stop/go traffic management or traffic lights by mid December and remain open over the Christmas-New Year period to accommodate holiday traffic, says Waka Kotahi Senior System Manager Wayne Oldfield.

“Waka Kotahi appreciates how important the holiday period is to the local economy and we are doing all we can to open the road.”

“We’ve installed the first set of piles. More than 100 four-metre and eight-metre piles have been drilled along the road centre line so the heavier machinery can move in to complete the job.”

“A 20 tonne drill rig and a crane are now on site to drill the 49 main support piles that will reach up to 20 metres into the rock under the road and complete phase 1 to protect the road.”

“The repair teams will be working double shifts (20 hours/day), which will accelerate the work and save fifteen to twenty days on the schedule. Much still depends on the weather, the hardness of the rock we’re drilling into and the stability of the hillside. Safety remains our priority.”

The big rig will drill holes up to 20 metres deep, with the crane then lifting steel casing into the hole. A reinforcing cage will be inserted into the casing, which is then filled with concrete. The slip is 40 metres wide but the completed wall will be 75 metres long to future proof other unstable sections of road.

The cost of this first stage of the repair is estimated at $3.8 million.

Wayne Oldfield says that in the New Year the road will be closed again so the works team can cut into the hillside to realign the road and restore it to two lanes. In designing the work, the team will be looking for opportunities to have the road open to traffic.

The area, also known as Maungataniwha, has great significance to many iwi/hapū in the north. A hui was held last week to provide an update on the works and explore areas for collaboration, such as harvesting seedlings from removed vegetation and ensuring the permanent repair design does not take away the natural beauty of the ngahere (forest).

The Mangamuka Gorge has been closed since heavy rain across Northland in mid July brought down eight slips in the gorge. Apart from the remaining big slip, the road has been cleared to at least one lane and maintenance crews have worked to repair the road surface, replace roadside guard rails, improve drainage and generally tidy up the roadside.

“Waka Kotahi acknowledges the impact of the road closure on local communities and the extra time and cost of travelling on the recommended detour route - SH10 - which can add 20-30 minutes to the journey.”

© Scoop Media

Parliament Headlines | Politics Headlines | Regional Headlines

Gordon Campbell: On Whether We Should Be Betting Quite So Heavily On Astra Zeneca’s Covid Vaccine

According to this week’s Speech from the Throne, maintaining public safety during the pandemic will remain the government’s top priority. Next year will (hopefully) bring the rolling out of a free vaccination against Covid-19 to New Zealander. Currently, there are three possible vaccine contenders but the effectiveness of the vaccine will be only one of the factors determining which vaccine will pre-dominate. On the basis of the cost per dose, and the ease of manufacture, storage and distribution, the Astra Zeneca/Oxford University vaccine will almost certainly be the prime choice for New Zealand, at least initially... More>>


New Zealand Government: Speech From The Throne

It is my privilege to exercise the prerogative of Her Majesty the Queen and open the 53rd Parliament.
In the October election, New Zealanders elected a majority Government for the first time under our Mixed Member Proportional electoral system... More>>

Grant Robertson: Government To Review Housing Settings

New Zealand’s stronger-than-expected economic performance has flowed through to housing demand, so the Government will review housing settings to improve access to the market, the Finance Minister Grant Robertson announced today. “Our focus More>>


Law Commission: Recommends New DNA Laws For Criminal Investigations

Te Aka Matua o te Ture | Law Commission today released a report that recommends a new, comprehensive regime to control how DNA is obtained, used and retained for criminal investigations. The report has revealed significant gaps in the operation ... More>>


New Zealand Government: To Declare A Climate Emergency

The Government will declare a climate emergency next week, Climate Change Minister James Shaw said today. “We are in the midst of a climate crisis that will impact on nearly every aspect of our lives and the type of planet our children will inherit ... More>>


Economy: Crown Accounts Reflect Govt’s Careful Economic Management

The better-than-expected Crown accounts released today show the Government’s careful management of the COVID-19 health crisis was the right approach to support the economy. As expected, the Crown accounts for the year to June 2020 show the operating balance ... More>>


Green Party: Announce Portfolio Reshuffle With Talented And Energised Caucus Team

“The Green Party caucus offers a breadth of talent and energy to the Parliament this term. In ten MPs you have a small business owner, a human rights lawyer, an academic, a climate negotiator, a transport planner, and so much more”, Green Party ... More>>





InfoPages News Channels