The Puente Romano is a Roman bridge over the Guadiana River at Mérida in southwest Spain.
The Puente Romano was built c. First Century CE. It is the world's longest surviving bridge from ancient times, having once featured an estimated overall length of 755 m with 62 spans. The piers are designed to withstand river current as they are rounded on the upstream side and square on the downstream side.
Puente Romano has undergone at least two significant restorations: once by Sala, a Visigoth, in 686 and once by Phillip II in 1610. Seventeen arches were destroyed in 1812 as a defensive measure against at attack during the Battle of Badajoz.
Wikipedia https://en.wikipedia.org/wiki/Puente_Romano,_Mérida
Address 9 Calle Tarraco, Mérida 06800, Spain
Coordinates 38°54'41.182" N -6°21'13.461" E
