Abstract：Research purposes: For building overpass bridge over busy railway line， the following things should be taken into consideration specially in bridge design，namely making sure safe operation of the railway and smooth construction. The bridge structural styles available for different line conditions are presented for providing reference to more and more railroad-overpass bridge design.
Research methods: The integrated method of economic and technical analysis is adopted based on the features and experience of design of railroad-overpass bridge.
Research results: In view of taking construction method and making structural design of railroad-overpass bridge appropriately to guarantee the safe operation of the railway, the appropriate common schemes of overpass bridge available for railway section and terminal are presented.
Research conclusions: For the bridge in railway section，it is adapted to use box beam，T beam and hollow slab beam and constructed by adopting precast erection method. For the bridge in railroad terminal，it is adapted to use cable- stayed bridge，large-span rigid frame bridge or composite steel and concrete beam bridge and constructed by adopting erection methods of swing，cantilever and jack-in.
2007, Vol. 24 
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