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