The　seismic　response　of　Five-span　isolated　continuous　bridges　under　far　field　and　near　field　long-period　ground　motions　are　discussed.　Lead　rubber　bearings　(LRB)　or　friction　pendulum　bearings　(FPB)　are　used　in　the　bridges　and　the　ground　motions　have　significant　pulse　impacts.　Comparing　with　an　aseismic　structure,　the　isolation　effects　of　two　isolated　bridges　are　declined,　and　the　seismic　performance　of　an　FPB　structure　is　better　than　that　of　an　LRB　structure.　Furthermore,　the　far　field　long-period　ground　motion　has　an　adverse　effect　on　an　isolated　continuous　bridge　with　LRB　in　view　of　the　larger　displacement　and　internal　force　comparing　with　FPB　bridges.　©　2016,　Engineering　Mechanics　Press.　All　right　reserved.