The Central Interceptor is a critical piece of Auckland’s future infrastructure, essential to ensuring water quality for generations to come. The main tunnel is 4.5m in diameter and 13km long, with two 2.5m diameter link tunnels.

Robert Bird Group were initially involved in tender design with the Pacific Partnerships bid team, providing structural tender designs for 17 shafts supporting geotechnical engineers in developing construction methodologies for tender design of 17 shafts that ranged in diameter from 4.5m to 16m and in depth from 16m to 80m, and varied considerably in material, construction methodology and complexity.

Robert Bird Group were subsequently engaged by the successful construction consortium of Ghella-Abergeldie Joint-Venture (GAJV) to provide civil engineering for compound enabling works and structural engineering for temporary structures at the Mangere WWTP site compound and the May Rd shaft site compound.

Project Metrics

Project Value:
$1.2 Billion NZD

Project Metrics

Pacific Partnership (Bid)
Ghella-Abergeldie JV (Delivery)
Robert Bird Group Services:
Structural Engineering (Bid Phase)
3D Staged Construction Visualisation (Bid Phase)
Civil Engineering (Delivery Phase)
Construction Engineering (Delivery Phase)