Ponte de Segura, Roman bridge in Idanha-a-Nova, Portugal and Spain
The Ponte de Segura is a stone Roman bridge spanning the Erges River between Portugal and Spain. It comprises five arches, of which two are original Roman construction while three were rebuilt in later periods.
The bridge was built in the 2nd century under Emperor Trajan as part of the Roman road network in Lusitania. Damage over centuries led to partial rebuilding by Portuguese craftsmen during the 1500s.
The bridge reflects two distinct building periods: original Roman foundations support arches rebuilt in the 1500s by Portuguese craftsmen. Crossing it today reveals how the structure carries the marks of both nations that share this river.
The bridge is accessible via regional road EX-207 from Piedras Albas and continues to serve as a crossing point between both countries. You can approach and walk across from either side without obstacles.
The Roman work stands out from the later Portuguese rebuilding through its distinctive masonry quality and stone finishing technique. These visible differences in construction style reveal how two separate building traditions shaped the same structure centuries apart.
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