This master thesis deals with the behavior of creep resistance and the resistance to longitudinal displacement on railway bridges. In order to get the behavior of the resistance, the collective answer of the rail bridge interaction after load has to be considered. The continuous welded rail on a support structure on a load, due to for example temperature changes, constricts the superstructure in its movement. Therefore, longitudinal forces are produced. The rail and the support structure interact and in combination offer resistance against longitudinal forces. Creep resistance and resistance to longitudinal displacement specify the present longitudinal load - deformation behavior of the rail or the fastening for rail. The three loading cases of braking/ accelerating due to passing trains, seasonal temperature changes and bending of supporting structure,are regulated in ÖNORM 1991-2. Another loading case treated theoretical in this thesis is the load due to a change of the coupling stiffness in longitudinal direction between thetrack and bridge due to a passing train. The creation of a finite element modelwas focused for the bridge over the L110 between the directionof St. Pölten to Vienna, in the railway network of the ÖBB. A monitoring program over the whole bridge, which was made by the company Fritsch, Chiari und Partner ZT GmbH, is used as data base.The measured temperatures of the support structure and the consequential results serve as model calibration. In the end, the results of the prepared structure, by means of the defined boundary conditions, should be comparable to the displacement in the monitoring program. For this reason the qualification of the used programs ATENA and GiD was verified for the study of the track bridge interaction. The comparison of the theoretical behavior of creep resistance and the resistance to longitudinal displacement with the actual behavior gives information about possible adjustments and improvements in the verification.