This paper focuses on the fretting fatigue behaviour of novel pin-loaded carbon fibre reinforced polymer (CFRP) straps studied as models for corrosion resistant suspenders of half-through arch bridges. Two types of straps were tested: small model straps and large fullscale straps. In a first phase, eight fully laminated pin-loaded CFRP model straps were subjected to an ultimate tensile strength test. Thereafter, and in order to assess the durability, 26 model straps were subjected to a fretting fatigue test, in which ten did not fail. A S-N curve was generated for a load ratio of 0.1 and a frequency of 10 Hz, showing a fatigue limit of the straps around the epoxy matrix fatigue limit strain, corresponding to 46% of the model straps’ ultimate tensile strength (σ_UTS). The fatigue limit was defined as 3 million load cycles (N = 3×10⁶), but tests were even conducted up to N = 11×10⁶. In a second phase, one full-scale strap was tested for its ultimate tensile strength and two full-scale straps were fatigue tested. The influence of the fatigue testing on the straps’ residual mechanical properties was also assessed for both strap types. Catastrophic failure of all straps was initiated in their vertex areas.