In this thesis, a numerical static and dynamic analysis of a truss bridge 30 m long, 6 m wide and 5 m high, which is supported by two supports, was performed. Modeling of the bridge truss was performed using standard beam profiles made of structural steel. In order to gain confidence in the numerical model of the bridge truss, the verification of the applied beam finite elements was performed on the example of a planar truss. The computer program Space Claim, which is part of the Ansys 2019 R2 package, was used to create a 3D model of the bridge. The Ansys Mechanical finite element analysis program was used for the numerical analysis itself. For static analysis of the bridge, the load due to the own weight of the bridge and the additional load of the concrete slab of the bridge in the amount of 500 kg/m2 were used. After the static analysis, a transient analysis of the bridge was performed, which simulated the movement of vehicles of different masses and different speeds. Based on the transient analysis, the dynamic factor was determined as the ratio of the deformation due to the transient and static load. Finally, a modal analysis was performed to determine the natural frequencies and vibration modes of the bridge.