The main object of this research is concerned about the best choice of the mathematical model to carry off the static analysis for cable stayed bridges. The static analysis of cable stayed bridges having three spans with considering single or double planes of cables in harp shape is carried out. Eight cases of loading which include the most symmetric and asymmetric traffic loads are considered. In addition, two special cases of loading (wind loads in both longitudinal and transverse directions) are investigated. To take the influence of connections between pylons and floor beams into consideration, four common cases are presented. The static analysis is carried out taking into consideration geometric and material nonlinearities. The own weight of all structural elements, and traffic load including impact are taken into account. In the static analysis, the energy method, based on the minimization of the total potential energy of structural elements, via conjugate gradient technique is used. The procedure is carried out using the iterative steps to acquire the final configurations. All prepared computer programs in FORTRAN language for this work are written by the author. The major conclusions, which have been drawn from the present work, are outlined.