Single Column shaped bridge is often used as a city program, it has the separate grade crossing, and multi-entry multi-exit, and greater clearance under the bridge, etc. But its stress situation is more complex, for designers and construction workers, put forward higher requirements. This article embarks from the stress of single Column shaped bridge, comparative analysis shaped bridge and curved bridge, concreting continuous beam bridge differences and similarities, and proposes the support way to the heterogeneous bridge's influence. Based on the single column bridge study, we find a simplified method on modeling, and its accuracy is in line with requirements of project. Finally, analyzes of the actual bridge, verifies the correctness of the calculation method, and proposes the key technologies.