ABSTRACT
The article presents a new bridge construction system called “Crocodile”, designed for spans of 50–60 meters. This system uses rolled I-beams: without any modifications in the central part of the spans, and after longitudinal cutting, the resulting T-beams are embedded in concrete girders in the intermediate support zones. The technology is demonstrated on the example of the bridge construction over the Kwisa River in Trzebów, erected recently by Nowak Mosty company. The article describes the technology, its benefits for both the contractor and the investor, as well as the bridge assembly process. Alternative construction methods are also discussed. The design of the Crocodile bridge goes beyond the principles outlined in Eurocodes 2, 3 and 4 and is based on the latest research concerning so-called hybrid sections and beams. The challenges associated with the technology are highlighted, along with appropriate references to source documents.
