Long-span　bridges　are　always　a　multi-support　structural　system,　and　seismic　ground　motion　can　vary　significantly　over　distances　comparable　to　the　length　of　such　kind　of　bridges,　so　it＇s　difficult　to　carry　out　shaking　table　tests　because　of　the　restriction　of　the　dimension　and　amount　of　shaking　tables.　This　paper　discusses　the　multiple　sub-table　cordwood　system　is　used　to　conduct　a　study　on　the　seismic　testing　of　a　three-span　irregular　Concrete　filled　steel　tubular　(CFST)　arch　bridge　with　the　objective　of　investigating　the　dynamic　performance　of　the　bridge　under　spatial　earthquake　motions.　The　development　and　testing　of　the　bridge　model　and　selected　experimental　results　are　discussed　then.　The　seismic　response　and　response　characteristics　of　acceleration,　displacement,　internal　force,　and　strain　of　the　structure　under　earthquake　excitations　are　gained,　which　can　provide　test　data　and　basis　to　evaluate　the　seismic　performance　of　this　CFST　arch　bridge　or　other　similar　structural　system　design.　©　(2011)　Trans　Tech　Publications,　Switzerland.