Within the rehabilitation project of 13 concrete bridges, works are being performed on the production and installation of prefabricated elements (edge cornices, channel covers for installations), works on strengthening the pillars and repairing all visible concrete surfaces. Reinforcement of the arch vaults is performed on three arched bridges by installing carbon canvases in the longitudinal and transverse directions. Also, the construction and installation of a new pedestrian fence, protective nets on the bridge, pipes for drainage of the installation channel and the production and installation of steel drainage verticals are being carried out. Within the agreed scope of work, in addition to the group of preparatory works, earthworks, reinforced concrete, metal works and works on repair of concrete surfaces that affect the durability and functionality of the bridge structure, works on installation of watertight expansion joints, installation of dumpers and works on upper machine. Execution of works on the upper machine includes the purchase and installation of sleepers against the travel of rails, replacement of sills, gravel and fasteners, production and protection of new sprayed waterproofing of the pavement, installation channels and footpaths and mechanical track regulation. In addition to the mentioned works, drainage of atmospheric waters is performed on two bridges.