Guadiana International Bridge, Castro Marim

The Guadiana International Bridge is a bridge that crosses the Guadiana River connecting southern Spain and Portugal. It is the southernmost land crossing on the Portugal–Spain border. It is not split evenly between the two countries, a greater share of it situated in Portugal. Completed in 1991, its structural type is a cable-stayed bridge, with a deck of prestressed concrete. The bridge was designed by the Portuguese Structural Engineer Professor José Luis Câncio Martins on behalf of Huarte S.A. and Teixeira Duarte. The bridge is open to vehicles only. It is the third longest bridge in Portugal and one of the longest in Spain. ()