The final piece of the 95-metre-tall mast centrepiece for Brisbane’s Kangaroo Point Green Bridge, installed by Marr Contracting’s M2480D tower crane, has been lifted into place.
Situated along the bustling Brisbane River, the Kangaroo Point Green Bridge project is being delivered by the BESIX Watpac-led consortium, Connect Brisbane, acting on behalf of the Brisbane City Council.
A key challenge faced by the project team was devising a method to construct the bridge mast with minimal disruption to the daily operations of public ferries and private vessels using the river. Recognising this challenge early in the design phase, Connect Brisbane engaged Marr Contracting to develop a lifting strategy that supported their preferred construction methodology and addressed the challenges associated with constructing the 95-metre-tall mast.
BESIX Watpac project director Rowan Riggall highlighted the crucial role played by the company’s in-house engineering team in identifying the crane as the preferred lifting solution for the project.
“After comparing barge crane and tower crane options, the team confirmed the M2480D was the most suitable crane in the Australian market capable of lifting the fully assembled masthead,” said Riggall.
Working with Brisbane-based engineers Robert Bird Group, Marr Contracting developed a solution that involved deploying an M2480D Heavy Lift Luffing (HLL) tower crane with a 64-metre-long boom installed on a platform in the middle of the Brisbane River.
This configuration enabled the 25-metre-tall, pre-fabricated steel masthead, weighing 180 tonnes, to be lifted to a height of 95 metres – a feat that wouldn’t have been possible with a more traditional approach involving crawler cranes.
The lift was the heaviest to be undertaken as part of Marr Contracting’s scope of work, which included more than 10 major lifts and general construction lifting requirements over a period of 12 months.
Marr Contracting managing director Simon Marr said: “Reaping the benefits of modularised construction with fewer, heavier lifts is not only helping to deliver a safer, more productive site; but also allowing our client to share the economic benefit delivered by the project by engaging more South East Queensland businesses away from the work front.”
About Kangaroo Point Green Bridge
An initiative by the Brisbane City Council, the Kangaroo Point Green Bridge is set to become an iconic landmark connecting Brisbane’s CBD and eastern suburbs.
Spanning an impressive length of 460 metres, this bridge will rank among the world’s longest cable-stayed pedestrian and cycle bridges.
In June 2021, the Brisbane City Council awarded the bridge’s design and construction contract to Connect Brisbane after a detailed procurement process. The Connect Brisbane consortium, led by BESIX Watpac, comprises a team of specialists in bridge design, engineering and construction, including Rizzani de Eccher, WSP, Dissing + Weitling, Blight Rayner, Aspect Studios, Right Angle Studios and Rowland.
Construction of the Kangaroo Point Green Bridge is anticipated to be completed in 2024.
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