Work is now under way or finished on all 42 bridge structures for the AU$675 million project, which is due for completion late 2024.
The final concrete pile was recently poured for the bridges on the bypass, also known as the Bruce Highway Upgrade – Cooroy to Curra, Section D (Gympie bypass).
The Gympie Bypass is jointly funded on an 80:20 basis, with the Australian government contributing 80%.
Federal infrastructure, transport, regional development and local government minister Catherine King said: "The construction of these bridges is crucial to the flood immunity of the project.
"When completed, this new section of the National Highway will stand 27 metres above the regular Mary River water height in Gympie, at its lowest point.
“The new bypass is being built to a height that would have remained operational during events like the devastating floods of early 2022."
Transport and main roads ninister Mark Bailey said: "There are 42 bridges at 23 locations throughout the 26km Gympie bypass project.
"If each of the 575 piles were placed end to end, it would span over five kilometres." He added that this is over 15 times taller than Q1 in Surfers Paradise - Australia’s tallest building at 322.5m.
The bridges will cross waterways, the North Coast Rail line and local roads.
