Abstract:The Smart Island Landscape Bridge is two pedestrian and non-motorized vehicle bridges located in the high-speed rail new town of Quzhou City. The main bridges of both bridges are the special-shaped variable height semi-through truss structure bridge. The main bridge span of the west bridge is (60+160+35) m, and the main bridge span of the east bridge is (45+160+35) m. Compared with bridge type schemes and overall design in the early stage, and taking the east bridge as an example, the structural design is introduced in detail. Through the overall static calculation, stability analysis and dynamic analysis of the bridge, the results show that the bridge design is reasonable and meets the requirements of the specifications, which can provide reference for the design and calculation of similar semi-through truss structure bridges.