Portugal–Spain borderThe Portugal–Spain border, also known as "the Stripe", is an international border between Portugal and Spain. It is 1,234 km (767 mi) long, making it the longest continuous international border within the European Union. The Portugal–Spain border was first defined in 1297 by the Treaty of Alcañices and has barely changed since then, which makes it one of the world's oldest international borders.
PortugalPortugal, officially the Portuguese Republic, is a country in Southwestern Europe. Mainland Portugal is located on the southwestern portion of the Iberian Peninsula, and bordered by Spain to the north and east. Portugal also includes the archipelagos of Madeira and the Azores in the Atlantic Ocean. The country has a population of 11.4 million, and Lisbon, its capital, is the largest city.
SpainCountry in Southern and Western EuropeSpain, officially the Kingdom of Spain, is a country in Southern and Western Europe with territories in North Africa. Featuring the southernmost point of continental Europe, it is the largest country in Southern Europe and the fourth-most populous European Union (EU) member state.
Castro MarimCastro Marim (Portuguese pronunciation:), officially the Town of Castro Marim (Portuguese: Vila de Castro Marim), is a town and a municipality in the southern region of Algarve, in Portugal. The population in 2011 was 6,747, in an area of 300.84 km. The current mayor is Francisco Amaral, elected by the Social Democratic Party. The municipal holiday is June 24. In the Roman era, Castro Marim was known as Aesuris.
AyamonteAyamonte (Spanish pronunciation: [aʝaˈmonte]; Portuguese: Aiamonte) is a town and municipality of Spain belonging to the province of Huelva, Andalusia. It is located near the border with Portugal on the mouth of the Guadiana River. According to the 2025 municipal register, the city has a population of 22,001 inhabitants.
Spanish languageSpanish (español) or Castilian (castellano) is a Romance language of the Indo-European language family that evolved from the Vulgar Latin spoken on the Iberian Peninsula of Europe. It originated in the Kingdom of Castile, a historical kingdom in north-central Spain. Today, it is a global language with 519 million native speakers, mainly in the Americas and Spain, and about 636 million speakers total, including second-language speakers.
Portuguese languagePortuguese (endonym: português) is a Western Romance language of the Indo-European language family, written in the Latin script. With approximately 267 million native speakers, it is the fifth-most spoken native language in the world, and the most widely spoken language in the Southern Hemisphere.
Cable-stayed bridgeA cable-stayed bridge is a type of bridge that has one or more towers (or pylons), from which cables support the bridge deck. A distinctive feature is the presence of cables or , which run directly from the tower to the deck, normally forming a fan-like pattern or a series of parallel lines.
Obrascón Huarte LainObrascón Huarte Lain, S.A. (Spanish pronunciation: [oβɾasˈkon ˈwaɾte ˈlajn]); branded as OHLA Progress Enablers since July 2021, is a Spanish multinational construction and civil engineering company. The company is involved in infrastructure and commercial property construction, homebuilding and the operation of toll road and other transport concessions. In the latter, the group is particularly active in Mexico.
GuadianaThe Guadiana ( , US also , Spanish:, Portuguese:) is an international river defining a long stretch of the Portugal-Spain border, separating Extremadura and Andalusia (Spain) from Alentejo and Algarve (Portugal).
Teixeira DuarteTeixeira Duarte, S.A. is a company that leads a large conglomerate with more than 11,000 workers, present in 22 countries, in 6 activity sectors, achieving in 2019 a turnover of 877 million Euros. Teixeira Duarte, S.A. is listed at Euronext Lisbon since 1998, Being its shareholder majority of the Teixeira Duarte family. The Group's headquarters are located at , in Oeiras.HistoryTeixeira Duarte was founded in 1921 by the engineer .
Prestressed concretePrestressed concrete is a form of concrete used in construction. It is substantially prestressed (compressed) during production, in a manner that strengthens it against tensile forces which will exist when in service. It was patented by Eugène Freyssinet in 1928. This compression is produced by the tensioning of high-strength tendons located within or adjacent to the concrete and is done to improve the performance of the concrete in service.*As an Amazon Associate I earn from qualifying purchases.