Major Infrastructure Project in Brisbane

Legacy Way (formerly Northern Link) is a major road tunnel project in Brisbane, Australia. From 2014 on, two parallel road tunnels, approximately 4.6 km long, will connect the Western Freeway in Toowong with the Inner City Bypass (ICB) at Kelvin Grove. BAUER Foundations Australia Pty Ltd, the local subsidiary of BAUER Spezialtiefbau GmbH, has been awarded the piling works for the eastern cut-and-cover structure, as well as vent shafts and the western trough.

The scope of work for stage one comprises the construction of approximately 590 secant piles, 111 soldier piles and bored piles with 900 and 1,200 mm diameters up to 28.5 m in depth. Bauer drilling rigs of the types BG 25 and BG 28 were used as main equipment, employing segmental double wall casing installation technique.
Particularly challenging was the work from an existing flyover at the Inner Northern Bus Way which needed to be modified to suit the future Legacy Way road alignment. The other main challenge faced on site was to overcome the unexpected extreme high strength rock up to 160 MPa. The project duration is split into two stages. Stage one was completed in September 2012.

Source: BAUER Spezialtiefbau GmbH

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