Attention has been paid to the shapes of entire bridges as well as their components, such as decks, girders, crossbeams etc. This paper presents some considerations concerning the shape selection of composite bridges. Now the customer’s confidence is growing, it is time to review this strategy and to ask which shapes are appropriate for the best performances of composites in bridge structures. that resemble the conventional steel components. Therefore we usually see composite Ibeams, channels, box girders, deck grids etc. The best way to win customer’s confidence was then to copy the shapes and sections well-tested in other materials. This was indeed a proper approach in the introduction stage of composite bridges. So far, composite bridges have basically followed the forms acquired from the engineering practice in other materials, like steel. Material descriptions and comparisons of the construction process and costs for the paired bridges are discussed. Built adjacent to this bridge is a twin structure which serves as a comparison for a constructability study. The success of the previous design research work resulted in the construction by the Wisconsin DOT of a two span highway overpass on US Highway 151 in Wisconsin that used FRP reinforcement for the bridge deck. Three forms of FRP reinforcing were combined in the bridge deck: FRP stay-in-place forms, deformed FRP rebar, and a new special prefabricated FRP reinforcing grid. The bridge deck contained FRP reinforcing designed using methods suggested previously. This project involved the actual construction of a highway bridge. A continuing research program at the University of Wisconsin-Madison is developing the designs for bridge decks reinforced with Fiber Reinforced Polymers (FRP). This paper focuses on the use of new FRP materials in reinforcing a concrete highway bridge deck, the construction process, and labor time and material costs.
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