Mangamuka Gorge slip repairs flyover – July 2024
Check out the progress made on the repairs to State Highway 1 through Mangamuka Gorge. This flyover of the entire site, carried out at the beginning of July 2024, shows how much has changed onsite compared to the previous flyover from December 2023. We're on track to reopen the road by Christmas 2024. We're currently working on all the critical slips – we've finished piling on nine of the slips, three of which are complete, and we've just drilled the final 1050 millimetre diameter piles for slips A1 / A2. We'll get underway with physical works on the newest slip, A47, in early August 2024.
Mangamuka Gorge nightworks – July 2024
Here's a behind-the-scenes look at how our dedicated night crews are tackling the challenging terrain and critical slip sites repairs on State Highway 1 through Mangamuka Gorge.
Workers are busy doing a wide range of tasks on the road while you're sleeping, from breaking ground for permanent piles to using high-tech sensors to monitor ground movements, soil moisture, and rainfall and manage the risks of working in such a complex environment. Every shift is carefully planned to ensure progress, worker safety, and to and minimise disruptions.
Mangamuka Gorge slip repairs – June 2024
Check out this behind-the-scenes footage of work happening on State Highway 1 through Mangamuka Gorge – you can see the awesome progress roadworkers have made despite the winter weather and the storms that've rolled over us recently.
Mangamuka Gorge slip repairs flyover – December 2023
Check out the progress made on the slip repairs on State Highway 1 through Mangamuka Gorge. This was filmed between shifts in December 2023. We're now working on 13 of the 15 critical slips. You can see the transformation across the site since our previous flyover, with piling nearing completion on several of the slips. The commentary for this flight is provided by Kylie Harris from CLL Service and Solutions, the principal project contractor.
Mangamuka Gorge slip repairs flyover – August 2023
Check out the August 2023 flyover of the Mangamuka Gorge repairs. Since the June flyover, there has been significant progress on the enabling works, including piling, rock spall walls, stormwater and drainage improvements, and the start of permanent works on 6 of the 15 critical slip sites.
Progress update – June 2023
Here’s a look at the progress wokers are making on SH1 Mangamuka Gorge.
By the end of June 2023, drilling rigs weighing up to 60 tonnes will be brought in to begin permanent slip repairs. That’s why we’ve been carrying out enabling work to ensure the road is strong and sable enough to support such heavy equipment.
Timeline confirmed to restore resilience along SH1 in the Mangamuka Gorge
We now have a construction programme confirmed for repairs to 15 slips along SH1 Mangamuka Gorge and the road will be open and fully operational by May 2024*.
Since $100M funding was approved in December last year, we’ve mobilised the people and resources needed and have completed detailed design work to confirm how the slips will be fixed.
Given the importance of this road to the local community, we’re investigating opportunities to provide limited access to light vehicles over the summer holiday period to connect whānau, road users, and communities on either side of the gorge
Our video below gives an idea of the constrained environment we are working within.
*This video was made in March 2023, and since then, recent weather events have caused additional slips within the site area. This has added complications to existing slip sites and subsequently created delays to the programme. We’ve reassessed our programme, and the previously communicated timeframe of re-opening the road in May 2024 has now become unrealistic. We are now expecting the road to be operational in late 2024.
