The Fujiang River Bridge on Mianyang Sci-Tech City Avenue, located in Sichuan Province, is a critical node project of Sci-Tech City Avenue. Its main bridge, spanning the Fujiang River, is a single-span 255-meter under-slung basket-type steel box tied-arch bridge. Based on the design principle of "structure as landscape", the design adopts the theme “playing strings and composing rhymes”. It extracts “lines” as landscape design elements, integrating bridge functionality, visual aesthetics, and force characteristics. The arch ribs are designed with a 1.9-order parabolic shape, while the stay cables are arranged radially. The deck uses steel box girders to achieve tie rod functions, forming an image of “strings-bow body-harp base”. The bridge plaque is themed “Riding the Waves of the Fujiang River”, featuring a curved design. Night scene design employs dynamic lighting to enhance the imagery of harp strings through the interplay of light and shadow on the arch ribs and stay cables. Through integrated structural-landscape design, the project has become a technological culture landmark in Mianyang, enhancing traffic efficiency and urban imagery.