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This master thesis contents alternative design of three spans single-railed steel bridge and its main bearing structures. The bridge is located in km 19,459 on the track Děčín - Oldřichov. Crossing barrier is highway D8. The span is 28,38 m + 41,28 m + 28,38 m. The main bearing structure consists of solid steel beams with variable height of 2,3 m ~ 3,8 m, which are in the axial distance of 6 meters and reinforced with lengthwise and transverse stiffeners. The lower bridge deck with a continuous ballast bed consists of reinforced concrete bath, which is coupled with steel cross beams. All elements of the structure are made out of steel S 355. For design of the following standards have been used: ČSN EN 1991-2, ČSN EN 1993, ČSN EN 1994 – 2.

The subject of the thesis is to design and consider steel superstructure of a composite steel-concrete road bridge. It is a continuous beam with seven spans of 36,0 + 57,0 + 75,0 + 90,0 + 75,0 + 57,0 + 36,0 = 426 meters. The superstructure consists of welded I-beams, which pass into closed box girder. The calculations take into account the construction phase.

Subject of my masters's thesis is bearing construction from wood of pedestrian bridge via river Bečva in Karolinka. Span of the pedestrian bridge is 37 meters. Three 3D models of global model of whole construction and support models are created. The resulting draft is worked up in details. This work aim on models of joints of wooden parts, boundary conditions and global function of static model.

This diploma thesis deals with the proposal of a single box girder bridge of three spans in the town Blansko. It bridges the river Svitava and the main railway Praha - Brno. The calculations were carried out by hand, the model was created in the Scia Engineer programme. The thesis also describes the solving of a complicated phased construction with the necessity of turning the bridge into the final position. The construction is considered by Eurocodes.