CFST-RC　pier　is　a　modified　form　of　CFST　latticed　column　in　which　the　main　longitudinal　limbs　are　connected　with　RC-web　instead　of　steel　tube　lacings.　This　type　of　pier　is　constructed　in　tall　bridges　in　seismic　prone　zones.　RC-web　increases　the　stiffness　of　columns,　hence　reducing　the　slenderness　ratio　for　long　columns.　In　this　paper,　an　attempt　has　been　made　to　obtain　seismic　performance　characteristics　of　CFST-RC　columns　with　variable　widths　of　RC-web.　Three　CFST-RC　piers　with　variable　widths　of　RC-web　were　tested　in　the　laboratory.　Cyclic　load　test　was　performed　to　know　the　seismic　behavior　of　this　type　of　column.　Under　cyclic　loading,　the　seismic　performance　of　CFST-RC　piers,　such　as　failure　modes,　ductility,　load　displacement　hysteretic　curves,　energy　absorption　capacity,　strength　and　stiffness　degradation　have　been　studied.　The　results　showed　that　the　lateral　load-carrying　capacity　and　energy　dissipation　capacity　of　the　columns　increased　with　the　increase　in　the　width　of　RC-web,　while　the　ductility　decreased.　Cracks　in　the　RC-web　and　the　tearing　of　steel　tube　at　the　base　of　the　piers　were　the　main　failure　modes　of　the　CFST-RC　piers.