Picture 1
The expressway overpass adopts a 3-span simply supported beam bridge to achieve the crossing of the expressway, with two side spans achieving slope brushing function. Therefore, it is necessary to construct a 3-span supported beam bridge, as shown in the picture 1. Optimize another solution, as shown in the picture 2, such as using a buried corrugated steel arch bridge with two spans of 20 meters to achieve project construction and engineering goals, and significantly save time and costs.