The general objective of this project is to ensure an adequate state of viability of some national roads representing roads of high importance (DN1, DN10, DN13C, DN24, DN2B) through punctual construction interventions or, as the case may be, rehabilitation of bridges located on their alignment. These interventions will ensure the maintenance of adequate connectivity on the national road network in the area of incidence of investment objectives. Through the desiderata of the project implementation, it is intended both the modernization/rehabilitation of existing bridges, as well as the construction of new bridges, including the infrastructure for their connection with the existing network.