Pounding between adjacent bridge segments are unavoidable in major earthquakes. They can not only cause severe localised damage at the location of collisions, but could also increase the relative girder displacements. This could render bridges unusable or pose threat to properties and human lives. In this study, a two-segment scaled bridge model with different fundamental frequencies was subjected to uniform ground excitations. The effects of pounding and soil-structure interaction (SSI) on the bridge relative responses were discussed. Based on the ground motion applied and the properties of sand adopted in this study, it was found that pounding could decrease the relative girder displacement in both fixed base and SSI cases, likely due to energy dissipation from the impacts. In the case of SSI, the maximum relative displacement was reduced due to pounding, but the residual displacement was increased. This could potentially affect the functionality of the bridge post-disasters.