This　study　aims　to　develop　simplified　calculation　models　of　the　post-earthquake　axial　load-carrying　capacity　of　reinforced　concrete　columns　to　determine　the　post-earthquake　traffic　flow　capacity　of　the　bridges　for　the　evaluation　and　design　process.　To　this　end,　the　maximum　and　residual　drift　ratios　are　first　determined　as　the　engineering　demand　parameters　for　the　simplified　calculation　model　for　the　evaluation　and　design　process,　respectively.　Then,　the　optimal　models　describing　the　relationships　between　the　maximum/residual　drift　ratio　and　the　post-earthquake　axial　load-carrying　capacity　are　selected.　The　analysis　results　show　the　normal　cumulative　model　in　the　coordinate　system　of　ln(x)-y　is　the　optimal　relationship　model.　On　this　basis,　the　effects　of　high-sensitivity　parameters　(i.e.　the　axial　compressive　ratio　and　shear　span　ratio)　on　the　post-earthquake　axial　load-carrying　capacity　are　investigated.　Results　indicate　that　the　axial　compressive　ratio　negatively　affects,　while　the　shear　span　ratio　positively　affects　the　post-earthquake　axial　load-carrying　capacity.　Finally,　the　simplified　calculation　models　of　the　post-earthquake　axial　load-carrying　capacity　are　developed　from　the　optimal　model　and　the　effects　of　the　high-sensitivity　parameters,　and　with　validated　high　accuracy.　The　simplified　calculation　models　provide　engineers　and　policymakers　with　a　tool　to　predict　the　post-earthquake　traffic　flow　capacity　of　bridges.