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Simple Repairs

As part of our Cyclone Recovery Response efforts, we identified and programmed 12 cyclone-damaged sites for simple repair work. All of these were completed during the first half of 2024 and were fully funded by NZ Transport Agency Waka Kotahi.

Our simple roading repairs included medium-sized structural projects that required minimal engineering design and construction work, costing less than $200,000 per siteThe cyclone-damaged sites were low risk to repair and involved installing small or simple retaining walls, culvert replacement and landslides. Those simple repairs did not require resource consent to complete and limited geotechnical input. 

We identified the following 12 sites eligible for simple repairs funded by NZ Transport Agency Waka Kotahi. 

Hautope Road 6.12

Hautope Road 6.12

Crews built a 2 metre x 76 metre retaining wall to repair the landslide and installed an earth bund to prevent water flow over the slope.

Tourere Road 3.5

Tourere Road 3.5

Crews repaired the broken culvert that triggered a landslide and filled in the slope, using rock armouring to hardfill the drainage channel beneath the culvert.

Rotohiwi Road 8.3

Rotohiwi Road 8.3

Crews constructed an MSE wall to repair the landslide and loss of carriageway, and installed an earth bund to prevent water flow over the face of the slip.

Hautope Road 1.2

Hautope Road 1.2

A 40-metre MSE wall was constructed to repair this medium-sized landslide, caused by poor drainage, and an earth bund installed to capture surface water to a new sump.

Wimbledon Road 12.9

Wimbledon Road 12.9

An 18-metre MSE wall was constructed to repair this landslide and MacMat was installed to prevent erosion.

Hiranui Road 1.3

Hiranui Road 1.3

Crews repaired a large undercut extending to the carriageway by building a 45-metre MSE wall with Terramesh across rock face.

Old Hill Road 5.9

Old Hill Road 5.9

Poor drainage triggered slope instability and the loss of one road lane. Crews installed an 8.5-metre MSE wall and cleared the adjacent culvert.

Wakarara Road 28.8

Wakarara Road 28.8

The first simple landslide repaired in early 2024, crews built a 20-metre MSE retaining wall with Terramesh face across gabion rock.

School Road 0.9

School Road 0.9

To repair the slipped road edge and restore two-lane access, crews built a 16-metre MSE wall with Terramesh face across gabion rock and installed an earth bund to capture surface water to a new sump.

Te Apiti Road 1.6

Te Apiti Road 1.6

Crews repaired the landslide with an 8 metre MSE Wall and made improvements to the culvert that will protect the site against future erosion.

Rangitoto Road 4.18

Rangitoto Road 4.18

Crews fixed this downhill landslide by building a 6-metre MSE wall with Terramesh face across gabion rock and replacing the existing culvert.

Kahuranaki Road 4.6

Kahuranaki Road 4.6

Crews repaired the landslide by constructing a 15 metre x 1.8 metre MSE retaining wall and reinstated the road above.

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