Refurbishment of a Historic Truss Viaduct
The refurbishment of a seven-span steel viaduct constructed in the industrial district of Szczecin at the beginning of the 20th century is described. After rebuilding and strengthening in the 1960s, the structure remained in service over the next forty years when the slab decking partially collapsed. A plan for the retrofitting and upgrading of the viaduct was drawn up and carried out. The thin deteriorated concrete deck slab of the floor was replaced. The new slab was made fully composite with deck stingers. The longitudinal profile of the deck was adjusted for the higher design speed of modern vehicles. New appurtenances were installed. Corroded steel members were replaced, and the old riveted steel structure is still robust although alleviated by a third welded plate girder. The old urban viaduct was upgraded twice during its life-time to meet the more current criteria and constantly increasing highway loading requirements.
Urban Bridge, Historic Bridge, Corrosion, Upgrade, Rehabilitation & Renovation, Composite Floor
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