The Despeñaperros tunnel are the most relevant of the five pairs which have been constructed as part of the Autovía del Sur (A-4) between the provinces of Ciudad Real and Jaén.
Acueducto de Segovia 2013 Award
awarded by Colegio de Ingenieros de Caminos, Canales y Puertos and Fundación Caminos de España
This construction improved road safety resulting a big reduction of traffic accidents, as well as a reduction in travel time for more than 24,000 drivers who travel the route daily.
The capacity of the sections, safety levels and respect for the environment are improved.
The two tunnels are 1.92 kilometers long southbound and 1.85 kilometers long northbound.