FCC Construcción has completed the opening of the second Erjos tunnel (Tenerife, Canary Islands), within the construction works of the highway between Santiago del Teide and El Tanque, which is part of the so-called Tenerife Island Ring. This high-capacity infrastructure will circumvent the entire Island, allowing the structuring of road traffic at the island level, with a reduction in travel time by half.

The Erjos tunnel consists of two parallel tubes, with a length of approximately 4,855 meters, to which two false tunnels should be added, 140 meters at the south mouth and 100 meters at the north mouth, with a total length of 5.1 kilometers, making it the longest road tunnel in the Canary Islands and the most important and largest road infrastructure developed by the Canary Islands Government and the one with the greatest value at a national level, not only in terms of investment volume, but also in terms of needs. social, economic and mobility that it covers.

The first cale occurred on June 26, 2023, and this second, in the advance phase, on August 15. The drilling, which has been carried out mainly by blasting, has been carried out in two phases with the aim of reducing the pressures transmitted by the ground in the process of stabilizing the vault: a first of advancement in the upper part and a second called destroys, in the remaining part. Drilling is currently being carried out in the crushing phase, in the lower part.

It should be noted that the tender budget includes environmental measures, which will involve an investment of 18 million euros, consisting mainly of the recovery and consolidation of habitats of community interest, as well as the restoration of the La Grama and La Grama quarries. Bilma mountain, and the construction of an edge park that protects the core of Santiago del Teide.