Improvements to the GI-638 highway between Deba and Mutriku requires the building of the de Alkolea tunnel. Its total length is 106 m, of which the central section is 80 […]

The Olesa capital is part of the Barcelona Orbital Dual Carriageway construction project, in the section between Olesa de Montserrat and Viladecavalls. This is a two-way tunnel with two independent […]

The Carbayín is located at kilometre 28/634 on the Gijón Sanz Crespo – Laviana 752 line on the metric went network, with a section 4 a single lane electrified track, […]

The N-232 highway in the section between Morella and Vinaroz, in the province of Castellón, currently improved, with the exception of the Querol Port section (between kilometres 46+300 and 54+900), […]

The project involved the construction of the Uretamendi tunnel, made up of two parallel tunnels, one in each direction, with two carriageways on each. East Tunnel (axis 42): will have […]

The Pacific 1 Motorway Connection includes the construction of a new twin direction Road, starting in the municipality of Bolombolo and linking with the Ancón Primavera road approximately 5 km […]

This project is included in the Bogotá – Villavicencio Highway Improvements works, and includes the completion of three tunnels in Sector 1. El Tablón – Puente Téllez. Tunnel 1, known […]

The length of the Aduna Tunnel is 4690 m. Nortúnel excavated from the mouth on the Andoain side a mine tunnel with a length of 1479 m, with an excavation […]

The Vilavella tunnel comes with two tunnels with a length of 902 m and 869 m. Both tunnels have a single lane road, with a truncated circular section of 52 […]