The master thesis deals with the calculation of driven steel piles for the foundation of the abutment of the Birina bridge in Ploče. The bridge is located in the Neretva delta where deposits of very compressible clays and silts can be found. These kind of soils have poor foundation characteristics. Based on the investigation work results carried out on the site of both abutments, the soil stratification was obtained with all the parameters required for the calculation. The calculations uses loads obtained by bridge structural engineers. The calculation was performed in Rocscience's RSPile program. At the beginning of the calculation, analysis of the load-bearing capacity and settlement of one pile was made, followed by an analysis of the transverse displacements of one pile. After all the necessary results of the analyzes for one pile were obtained, the analyzes for a group of piles were performed. The group of piles consists of 10 piles fixed on the surface in pilecap slab. The analysis contained the bearing capacity calculations, settlement and transverse displacements of the pile groupa. All analysis, for one pile as for group of piles, gave satisfying results.