In　order　to　investigate　the　longitudinal　pounding　effect　of　highway　bridges　with　high-piers　under　strong　ground　motions,　multiple　shaking　tables　tests　of　a　1/10　scaled　continuous　rigid　frame　and　simply-supported　girder　bridge　with　high-piers　were　carried　out.　The　pounding　responses　of　the　bridge　model　under　different　earthquake　excitations　including　the　uniform　excitation　and　the　traveling　wave　excitation　were　studied,　and　the　effectiveness　of　the　dampers　and　isolation　bearings　for　reducing　the　seismic　pounding　effect　were　analyzed　and　discussed.　Test　results　indicate　that　the　traveling　wave　effect　is　the　important　factor　in　seismic　pounding　response　of　high　pier　bridges.　Additional　dampers　can　mitigate　the　pounding　effect　apparently　and　play　a　role　in　reducing　seismic　response　for　bridge　superstructures.　Compared　with　conventional　rubber　bearing　(RB),　the　decreases　in　the　relative　displacement　and　the　pounding　force　between　adjacent　girders　were　30　%　and　55　%　with　lead　rubber　bearing　(LRB)　in　this　experiment,　respectively.　Seismic　pounding　effect　of　bridge　superstructures　depends　on　different　structural　dynamic　properties　of　adjacent　girders　and　characteristics　of　ground　motions.　©　JVE　INTERNATIONAL　LTD.　JOURNAL　OF　VIBROENGINEERING.