Large　scale　shaking　table　tests　were　performed　to　investigate　the　failure　mechanism　of　pile　group-bridge　system　subjected　to　liquefaction-induced　lateral　spreading.　The　tests　comprised　two　cases:　Case　L　which　refers　to　a　bridge　model　supported　by　a　2　x　2　pile　group　embedded　into　the　inclined　liquefiable　soils　with　crusts;　and　case　R　which　refers　to　the　same　bridge　model　fixed　to　a　rigid　foundation.　The　experimental　details　are　provided　and　typical　test　results　are　elucidated.　The　failure　mechanism　of　the　pile　group-bridge　system　under　strong　earth-quakes　is　revealed.　The　results　indicate　that　the　lateral　peak　soil　displacement　profile　has　a　linear　distribution,　while　the　lateral　permanent　displacement　profile　has　a　cosine　distribution　pattern.　It　was　also　found　that　the　pile　is　prone　to　damage　and　bending　failure　both　at　its　head　and　at　the　bottom　of　saturated　sand　where　it　is　fixed　into　bearing　stratum.　For　the　pile　group-bridge　system,　the　liquefaction-induced　lateral　spreading　causes　the　failure　position　to　move　from　the　pier　bottom　to　the　pile　head.　In　addition,　the　pier　bottom　is　more　likely　to　experience　damage　under　strong　earthquakes　in　case　R　than　in　case　L,　while　the　opposite　is　true　during　weak　earthquake　excitation.