The utility model provides an under hold shi jianzhi steel longeron arched bridge of putting more energy into, including two parallel arrangement's main truss, be provided with the bridge deck between two main trusses, the top of two main trusses is provided with hunchs of putting more energy into along the extending direction of bridge deck, the both ends of the hunch of putting more energy into respectively with the tip fixed connection of two main trusses. The utility model provides a large -span letter steel longeron iron road bridge's beam -ends corner be difficult to satisfy the problem of existing standard.