S Bridge is a suspension bridge constructed in 1996 (154m+452m+154m). This paper took the bridge as a background, and analyzed whether it could meet the technical requirements, thus providing a reference for the safe operation of the bridge. The results show that the bearing capacity of main girder, the sling stress and the safety factors of main cables meet code requirement, but the stress of stiffening girder concrete exceeds the code limits, meanwhile, the impact of temperature gradient load on stiffening girder is relatively large.