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TREC Tairāwhiti Recovery UpdateIssue 6 |
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20 September 2024 |
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Tēnā koe
Welcome to our fortnightly Tairāwhiti TREC e-newsletter, where you can find the latest information on recovery progress across the rohe. |
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State highway snapshotBelow is a snapshot of construction works either recently completed, underway or coming soon: SH2 recently completed
SH2 underway
SH2 coming soon
SH35 recently completed
SH35 underway
SH35 coming soon (Sept – Nov)
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Highway highlightsSH2 Otoko Hill Crews are hard at work repairing and stabilising the road, improving drainage, and strengthening the hill to help prevent future flooding. Check out our video to find out more.
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Investigations to understand what lies below the surface at Hikuwai Bridge SH35 Hikuwai Bridge update Innovative electro-seismic techniques are underway to map out what lies below the surface of the Hikuwai River and its surrounding areas, bringing the new bridge a step closer to construction. A local Gisborne-based company is undertaking part of the pre-construction investigations. This is to provide design and engineering crews with critical insights into geological conditions and potential obstructions under the ground. This quick, non-invasive technique involves using a boat to send gentle seismic waves into the ground. These waves travel through the water and the ground, and when they hit different types of materials, they create electrical signals. This work also includes some drilling to be undertaken by local contractor Civil Assist with early investigations expected to take up to three weeks to complete. The new Hikuwai No. 1 bridge will replace the temporary Bailey bridge built after Cyclone Gabrielle, with consents expected to be lodged later this year ahead of construction in 2025. |
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SH35 Mangahauini Gorge Ground investigation work (drilling) will be starting soon for informing the design of additional improvements on State Highway 35 (SH35) through the gorge. To gather essential information about ground conditions, crews will be drilling 100mm diameter boreholes to approximately 20-metres deep at around 17 locations along the road during October. Each hole will take 2 to 3 days to complete using a truck-sized drilling machine. Excavators and digging crews will also be assessing the ground and drainage conditions under the road. Also, over the following months there will regularly be engineers in the gorge, inspecting roads, drainage and structures, and surveying locations and levels using drones and traditional handheld equipment. To create space for this work we may need to close one lane of the road at times. The map below shows ongoing work on SH35 including geotechnical ground investigations along the red line. This is where around 17 boreholes will be drilled, pits excavated, and engineers will be inspecting the below-ground conditions. |
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Crews building scour and erosion protection beneath the Mangakuri Bridge Progress at Mangakuri The team is making good progress building scour and erosion protection beneath the Mangakuri Bridge with work expected to finish before the end of the month. Local contractors Parata have been delivering this work which involved temporarily diverting the stream and strategically placing 1,600 tonnes of rock as part of the project. Similar rock protection work beneath a number of Tairāwhiti’s state highway bridges has been ongoing for TREC to reduce the impacts our many waterways have on the roading network. |
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Preparing for the busy summer roadworks seasonWe’re gearing up for another busy summer roadworks season. There's going to be a lot of work happening right along SH35 and SH2, with local crews fixing damaged sections of road, stabilising areas to prevent slips, maintaining bridges and carrying out investigation works for larger projects. We’ve been preparing for this, and work is being scheduled to reduce impacts on travellers. But with so much going on you’ll need to allow extra time to travel around Tairāwhiti. We’ll share more details of our summer works programme in future e-newsletters. |
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Upcoming road closuresThe planned closure of SH35 – Rotokautuku Bridge – on Monday 23 September has been pushed back to the contingency date of Monday 7 October from 12pm to 12.30pm. Further details will be shared in our next e-newsletter. A reminder that SH2 at Waikare Gorge, Pūtōrino will be closed overnight on Monday 30 September and Tuesday 1 October, 9pm to 5am both nights so the bridge decking can be replaced. There's no viable detour route during the closure. If you’re driving between Tairāwhiti and Hawke's Bay during the upcoming school holidays, please plan ahead. If bad weather delays this work, roadworkers will continue on Wednesday 2 October overnight into Thursday. See more information here. Please sign-up to our weekly planned report, emailed direct to you every Friday with information on where weekly stop/go sites are located. Sign-up here: lynne.chaffey@trec.nz |
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Removing native fish to safety Did you know?Healthy rivers and streams We protect waterways while we work. We temporarily move native fish safely away from our sites, and we also set up barriers to stop construction material getting into the water. We regularly inspect sites to ensure our works don’t affect water quality. |
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Whakapā mai – Get in touchFor more information on the Transport Rebuild East Coast project:
If you spot an issue at a work site after hours, call 0800 4 HIGHWAYS (0800 444449). Sign-up to receive these fortnightly newsletters:
Local road network Gisborne District Council is responsible for local roading recovery projects, for more information please click here. For up-to-date information on local road closures please click here. |
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