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The Queensferry Crossing, formerly known as the Forth Replacement Crossing, is a unique bridge built across the Forth River Estuary near Edinburgh in eastern Scotland. The structure, with a length of 2.7 km including approaches and a height of 207 metres above high tide, is the longest three-tower, cable-stayed bridge in the world and also by far the largest to feature cables which cross mid-span.
This innovative design provides extra strength and stiffness, allowing the towers and the deck to be more slender and elegant. The bridge was opened to traffic in September 2017.
RESTON-SPHERICAL bearings support the structure’s deck. For the viaducts, bearings weighing as much as 16 tons each facilitate movements of up to ± 1,250 mm, vertical loads of up to 95 MN (weight of Eiffel Tower) and horizontal loads of up to 13 MN. The flanking towers are each equipped with two vertically-aligned spherical bearings to allow deck movements and transfer horizontal loads of up to 17 MN. To facilitate axial expansion / contraction, the bearings are preloaded using disc springs. During construction, the deck is restrained at each tower by 8 huge LASTO®BLOCK bearings (up to 46 MN each).
The bride is also equipped with four TENSA-MODULAR expansion joints with a movement capacity of up to 2,300 mm. These are among the largest expansion joints ever manufactured and a world record for modular expansion joints with noise-reducing sinus plates.
RESTON-SPHERICAL bearings (up to 95 MN, preloaded by springs), LASTO-BLOCK bearings, TENSA-MODULAR SILENT expansion joints of type LR17-LS100 and LR23-LS100, ROBO-MUTE lower noise reduction system
Cable stayed bridge
2.7 km incl. approaches
FCBC JV (Hochtief, Dragados, American Bridge, Morrison)