Legacy Way Eastern Portal

Brisbane, Australia



Brisbane City Council

Main Contractor:


Transcity Joint Venture, Transcity is an integrated team comprising BMD Constructions, Italian company Ghella and Spanish construction company Acciona

Foundation Contractor:


BAUER Foundations Australia Pty Ltd

Scope of work:


590 secant piles, soldier piles and bored piles with 900 and 1200mm diameters up to 28.5m depth

Construction Period:


Oct 2011 to Aug 2012 (Stage 1); Apr 2012 to June 2013 (Stage 2)


The Legacy Way project comprises twin, two-lane tunnels, approximately 4.6kms in length, running straight through between Toowong and Kelvin Grove. Legacy Way (formerly Northern Link) is the fourth project in Brisbane City Council's TransApex plan, designed to reduce congestion and increase connectivity on Brisbane's road network.


Bauer Foundations Australia was awarded the piling works for the Eastern Cut & Cover Structure. The eastern buried structure was constructed as a serious of anchored secant pile walls. A ‘hard-firm’ wall configuration was adopted. Constructing piles in this configuration forms a continuous, near watertight wall, which provides the structural requirements and prevents water or soils leaching between the piles after excavation. The majority of piling works on Legacy Way were secant piles.