To　study　the　effects　of　ground　motion　spatial　variations　on　curved　bridges,　this　paper　presents　a　shake-table　test　for　a　1/10-scale　typical　curved　bridge　under　spatial　ground　motions,　including　wave　passage　effect,　local　site　effect,　and　ground　motion　multidimensionality.　The　experimental　results　show　that　both　wave　passage　and　local　site　effects　have　significant　influence　on　seismic　responses　of　curved　bridges.　Wave　passage　effect　on　curved　bridges　is　attributed　primarily　to　the　higher　asymmetric　modes　and　pseudostatic　displacements　induced　by　asynchronous　excitations,　whereas　local　site　effect　is　more　obvious　for　structures　with　fundamental　frequencies　close　to　the　predominant　frequencies　of　the　sites.　Compared　with　straight　bridges,　the　curvature　radius　causes　curved　bridges　to　be　more　sensitive　to　ground　motion　spatial　variations,　especially　the　local　site　effect.　Therefore,　curved　bridges　may　be　damaged　more　seriously　than　straight　bridges　during　the　same　earthquake.　Furthermore,　seismic　responses　of　irregular　curved　bridges　are　more　sensitive　to　ground　motion　multidimensionality　than　are　those　of　straight　bridges.　In　this　experiment,　the　effects　of　bridge　abutments　and　nonuniform　sites　along　the　bridge　were　not　considered.　(C)　2014　American　Society　of　Civil　Engineers.