The world’s longest tunnel and the largest tunnel boring machine—at 17.55 meters—are the products of Spanish companies.

Spanish companies are leaders in the infrastructure sector. ACS, FCC, Abertis and Ferrovial are four of the largest infrastructure concession holders. OHL and Acciona are also major players.

FCC is now building the world’s longest tunnel, the St. Gotthard Base Tunnel in Switzerland, which will be 57 kilometers long. ACS meanwhile designed the world’s largest tunnel boring machine named Bertha, which measures 17.55 meters in diameter. Bertha is being used to construct a 2.7 kilometer tunnel in Seattle, Washington.

The high speed train line connecting Mecca-Jeddah-Medina in Saudi Arabia is also Spanish. A consortium of twelve companies won the contract for this project worth €6.8 billion. This Spanish group includes Renfe and ADIF, Ineco, Indra, OHL, Consultrans, Copasa, Imathia, Cobra, Dimetronic, Inabensa and Talgo.

The third largest port in the world is being built by FCC and Acciona in Açu, Brazil. It will be the largest port in the Americas.

OHL is building the high speed train line between Ankara and Istanbul, while Spanish company CAF will supply the rolling stock.

Typsa is participating in the construction of the world’s third largest hydroelectric plant at Belo Monte in Brazil. It is also designing the largest wastewater treatment facility in Atotonilco, Mexico.

The Spanish company Euroestudios is responsible for the supervision and monitoring of the Patnitop tunnel project in the Cashmere region of India, which will be the country’s longest. And Bulgaria’s largest construction project, the Vidin-Calafat Bridge linking Romania and Bulgaria, was built by FCC.

Spain’s large infrastructure companies generated revenues of €39 billion in the first nine months of 2013.