Second longest tunnels built in Spain
INDUSTRY, INNOVATION AND INFRASTRUCTURE
Build resilient infrastructure, promote sustainable industrialization and foster innovation
Economic growth, social advancement and action against the climate emergency depend largely on investment in infrastructure, sustainable industrial development and technological progress. Today, about 1 billion people live more than 2 km from a roadway, 940 million live without electricity, and 663 million lack improved drinking water sources.
ACCIONA participates in the entire infrastructure construction value chain, from the identification of opportunity, design and execution, to the operation and maintenance of the constructed works, using the most advanced and innovative techniques.
Performance quality and safety are two of the criteria that maximize the company's value proposal in the development of large infrastructure projects and that differentiate it from other competitors in the construction field.
The project consisted of the construction of twin tunnels 8.50 m in diameter and 10.67 km long, of which 7.67 km were excavated using TBMs and the remaining 3 km using conventional methods. The gradient of the tunnels is 1.685% downwards from León towards Asturias.
In addition, an intermediate access gallery of 2,045 m and 28 connecting galleries were constructed between the two tunnels with a total length of 1,262 m.
They are the second longest built in Spain, the sixth longest in Europe and the thirteenth longest in the world. The project was completed in March 2009.
- Location: León - Asturias, Spain.
- Contract type: Construction.
- Infrastructure: Construction of twin tunnels with a diameter of 8.5 m and a length of 10.67 km, of which 7.67 km were excavated using tunnel boring machines, and 3 km using conventional methods.
- Year of project completion: 2009