According to the oldest population, these small bridges "are from Roman times". In addition to the Pontizela do Hilário, Tábua, Cruzeiro and Alhada there are others that are not in the best state of conservation because they have been overthrown by the floods.

Next to these points there are also watermills. Although all are private, two are worth mentioning for having been conserved in order to maintain their use, such as Moinho da Alhada and Moinho do Cais, next to Ponte Metálica, a crossing that links the place of Ribeiro to the place of Grovas.