Rosedale Closed Landfill Retaining Wall

Client

Auckland Council

Scope

Retaining walls
Roading

Partners

JK Construction
This project involved the construction of a 108-metre-long timber pole retaining wall to stabilise a critical section of the Rosedale closed landfill. The new wall replaces a deteriorating timber structure and ensures the long-term containment of the lower landfill slopes.

The site presented significant challenges, including high groundwater levels, constrained access, and strict environmental controls associated with the closed landfill setting. Construction was carefully sequenced to manage landfill gas risks, avoid service conflicts, and maintain isolation from adjacent active works. Drilling and piling activities were particularly demanding due to wet ground conditions, requiring modified methodology and tight coordination.

Oxcon self-performed all piling and structural works, completing the project ahead of programme and on budget. The outcome reflects strong collaboration with Auckland Council’s Closed Landfill team and successful delivery in a sensitive and technically complex environment.

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