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West approach viaducts to the Kayak Bridge, D4R7, Slovakia

Under construction

The viaduct of the total length of 785 m with a typical span length of 67.5 m is formed by a spine box girder with large overhangs supported by precast struts. The deck is erected progressively; at first the spine girder is cast in a formwork suspended on a special overhead gantry with "organic" prestressing system (OPS) that eliminates deflection of the gantry; after that the struts are erected and the deck slab is cast.

SHP: design of the structure in the transversal
         checking of the design