River & Stream Works

Whareroa Box Culvert

Project Overview: Installation of box culvert in Whareroa Stream within Queen Elizabeth Park. Demolish & remove old concrete bridge. Strip & stockpile topsoil for reuse. Installation of box culvert in the live stream. Place concrete blocks and place rock lining on fabric lining. Construct timber handrails.

Clearing

  • Demolition involved temporary water diversion with sandbag walls with a pump around operation.

  • The main work involved a bypass pipe as the temporary diversion. Work had to be completed in good weather.

  • Dirty water was pumped to silt fence and dispersed in the paddock

  • Fish passage had to remain open and fish were monitored on a daily basis

Works

  • Demolish & remove old concrete bridge

  • Strip & stockpile topsoil for reuse

  • Installation of box culvert in live stream

  • Place concrete blocks

  • Place rock lining on fabric lining

  • Construct timber handrails

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Wharemauku Erosion Protection