From literature surveys starting from 1996 up to today, it is found that the bond-strength models are usually derived from single and double shear tests. In this study, twelve commonly used bond-strength models are summarized. These former single and double shear test models are applied to the experiment data obtained from indirect tension four point bending tests of CFRP bonded single span beams with a crack. 16 different experiments are carried out to determine the usage of these former models on the CFRP bonded beam with a crack. The evaluated variables in this test program are the concrete compressive strength, the strip length and width of CFRP. The former analytical models are used to compare and evaluate the data obtained from these tests. In this study evaluation of the 12 different bond-strength models show that the Chen & Teng model is the best fitting model which has most of the variables that effect ultimate capacity of the specimens.