In this paper, the project case of Qiwu bridge in Jiangxi Province using link slab action between simply sup-ported spans is introduced. The structural system of Qiwu Bridge consists of a series of 3 simply supported steel-concrete composite spans connected at the pier supports by a link slab, so at this point only continuity through the concrete slab is achieved (semi-continuous bridge). This solution has both advantages of smooth driving condition of continuous bridge and enhancement of durability by removing expansion joints and clear structural behavior as simply supported spans. A non-linear finite element model of Qiwu Bridge was estab-lished through ABAQUS to simulate and predict the mechanical response and structural performance of this semi-continuous solution. Numerical results showed that the removal of the shear connection between steel beams and concrete slab close to the supports magnificently increased the stress level in the shear stiffness mutation region and made it easier to crack. A monitoring plan is also introduced to follow the actual structural response of Qiwu bridge during construction and along the service life to check the long-term performance of the proposed solution. The monitoring system is also described in the paper and the preliminary results during the early construction stages are also presented.Postprint (published version
