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This paper presents certain aspects of the design of the foundations of the "Mihajlo Apostolski" bridge over the Vardar river on the ASNOM boulevard in Skopje. The bridge consists of two separate structural units (branches), each with a total length of 93.6 m and a width of 15.3 m. The static system is a frame of three spans, also known as an integral type of bridge. The upper structure consists of a monolithic prestressed box two-cell girder with a parabolically variable bottom plate height and width. The end and middle columns are in the form of reinforced concrete plates, respectively founded on single-row and double-row piles. Considering the static system of the bridge, the deformability of the piles is also included in the analysis, which achieved a more realistic simulation of the behavior of the structure under the action of horizontal forces and forced deformations. Among other things, this paper also covers the stage of construction works, especially the construction of the foundations. Namely, during the construction of the foundations, the reinforcement cage is pulled out of one of the piles, for which the need for remediation of the damaged pile was imposed. First of all, the possible reasons for this situation were identified, as well as the possible solutions for remediation, after which detailed analyzes were carried out and the adoption of the most technically acceptable solution. Changes in the structure's foundation system have significant implications in the behavior of the superstructure. Hence the seriousness of the problem in question, and especially the approach to its remediation, which confirms the complexity of the remediation of the foundations of the structures.
