Considered an ex-libris of the municipality, it is a true monumental work built in masonry. Considered the highest stone bridge in the country and perhaps even in the Iberian peninsula, built in a place of unusual natural beauty – its construction dates back to 1913, and it took 3 or 4 years to complete.
The Poço de S. Tiago Bridge is a monumental engineering project, measuring 165m in length, with a central arch measuring 55m in span and 28m in height.
Built between 1912 and 1913, with a project by Paul Sejourné and guidance by François Mercier, both French. Integrated in the Vale do Vouga Line, which connected Espinho to Viseu, this railway line was also known as the Vale das Voltas Line, due to its successive curves.
The “Vouguinha”, the steam train, circulated through here, which later switched to diesel, until January 1, 1990, the line was definitely closed, between Sernada and Viseu. Already in sec. XXI, the railway channel, within the municipality, was converted into a cycle path, and the old Paradela station was transformed to support visitors, with a bar and bicycle hire. Soon the entire line between Sernada and Viseu will be transformed into an ecotrail.
(Classified as property of public interest – (02/28 97)
Sejourné was a great designer of masonry bridges, using the twin arch method, which dates back to Roman times. It allowed a lower construction cost and less effort on the central arch.
In the century XXI, the railway channel, within the municipality, was converted into a cycle path – the Ecopista do Vouga, and the old Paradela station was transformed to support visitors, with a bar and bicycle hire.
Source: https://granderota.riadeaveiro.pt/pois/ponte-do-poco-de-santiago/