Size of viaduct revealed
Monster Super T girders are used
THE Toowoomba Second Range Crossing’s viaduct is a major engineering challenge and the latest photo shared by Nexus shows its mammoth size.
The viaduct is a long bridge comprising a series of smaller bridges that are connected to one another and structurally supported by arches or sturdy platforms between two end towers.
The viaduct is being constructed along the escarpment between Wallens Rd at Ballard and the New England Hwy, using 5000 tonnes of reinforcement and 26,000 cubic metres of concrete.
Mid last year the first span of Super T girders were installed on the viaduct and since then crews have been working to install more, with the project surging ahead.
Queensland Minister for Main Roads and Road Safety Mark Bailey inspected the site at the time and marvelled at feat.
“The installation of the viaduct’s first girders is a major achievement,” he said.
“This sounds like a normal bridge job, but not when you consider the work is happening on the steep side of the Toowoomba Range and these Super Ts are up to 38 metres long, weighing up to 90 tonnes each.”
242 massive concrete girders will be installed, with 22 spans in total.
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Photo: Contributed