It is the most notable medieval bridge in the county. Its antiquity is already documented in the century. XII, when D. Afonso Henriques donated the territory of Ucanha to the widow of Egas Moniz. The bridge, built by the Romans, was later donated to the Cistercian monks who converted it into a source of income for the toll fees that were collected. In 1465, a quadrangular tower was added to the bridge, built to protect and control both people and goods.
The bridge operated with the barrier or toll tax for several years, a practice that was only abolished in the reign of King Manuel I, in 1504.
The Bridge and Tower of Ucanha was classified as a National Monument in 1910.
Source: https://www.cm-tarouca.pt/pages/218