The A Cigarrosa Bridge crosses the Sil River, connecting the municipalities of Petín and A Rúa. Its original construction was Roman, but, due to the near-total collapse of its structure, it was rebuilt by Juan de Náveda in 1577 and renovated a hundred years later, so today, few remnants of its primitive structure remain. Only the fourth pillar and five rows of ashlars from the second pillar are of Roman origin. Its Roman origins date back to the era of Titus and Domitian. Belonging to the Via XVIII or Via Nova of the itinerary of Antonio from Bracara to Asturica, the latter being the capital of the Gigurri people in Roman times, hence the name “La Cigarrosa” currently designates that area. It currently has five arches of unequal spans, of which only one, with a span of around 20 meters, crosses the Sil River in normal water conditions. This is possible because the bridge builders intelligently took advantage of a granite outcrop that narrows the riverbed and offers excellent foundation, allowing all the piers to be constructed out of the water. It is on the left bank (Petín side) where the Romans utilized the mentioned outcrop or granite promontory, which extends into the riverbed and is only covered by water during floods, to support most of the structure, which currently consists of five spans with lights of 8 + 10 + 4 + 19 + 10, all of them more or less pointed except for the central one, and of which three are ogival. Currently, the bridge is for pedestrian use, and a more modern one has been built for vehicular traffic between the two municipalities.