Rehabilitation, reinforcement and extension of the works of art located in the ER230 - Ponte de Bolfiar s / rio Alfusqueiro at km 24 + 950; EN333 - Ponte de Perrães at km 17 + 406; EN1- PI to vouga extension ramp at km 253 + 720 and EM1 - Águeda bridge at km 231 + 950.