Seismic capacities of the cable members of Incheon Bridge have been evaluated for the three different levels of earthquake motions, which are 1000-year-return-period(design basis level)), 2400-year-return-perioda and hypothetical maximum earthquake level(A=0.66), respectively. Both response spectrum method and time-history method were adopted for the analyses. The results showed that the cable members of Incheon Bridge has safe seismic capacity even under the maximum hypothetical earthquake which is more than three times higher magnitude of the design basis earthquake