We investigated the structural characteristics of concrete curved chord truss bridges consisting of a roadway slab deck, steel diagonals and a bottom slab which is prestressed by tendons. The bridge can be erected in the same method as used for stress ribbon bridges. After the roadway slab is completed, the structural system changes to a self-anchored system. The Ganmon Bridge is the first bridge constructed as a concrete curved chord truss bridge in Japan. We carried out the vibration test, and the validity of our analytical model was shown. Moreover, we showed the interesting comparison results of the structural and vibration characteristics using analytical models with diagonal members or vertical members. Finally, we could estimate the the serviceability of this bridge applied by dynamic responses analysis under moving vehicles. Furthermore, we showed the structural behavior in ultimate loading applied by non-linear analytical method using the fiber model.