Wainuiomata Landslide Stabilisation

What happened

Heavy rain in August 2022 caused a landslide at the top of the Wainuiomata Hill before the Pukeatua pedestrian bridge, resulting in lane closures along Wainuiomata Road. Concrete barriers and temporary speeds were installed at the base of the slope as an interim measure until funding and plans could be approved to remediate the site.

Wainui landslide

About the project

Physical works to repair the landslide at the top of the Wainuiomata Hill were completed in 2024 to reduce the risk of future slips in this area, ensuring a more resilient road for the Wainuiomata community.

Remediation involved removing vegetation and loose materials from the slope before it was stabilised by installing anchored steel mesh. The last step was hydroseeding to encourage revegetation on the slope.