Tunnels

DRAGADOS was awarded its first Subway project in Spain in 1944. In 1965, the company began its international push and won its first underground work contract . Since then, DRAGADOS has been awarded more than 530 underground projects in twenty countries within all five continents.

Today, having constructed more than 920 miles of tunnels, shafts, galleries and stations through all types of geological conditions utilizing state-of-the-art technology, construction methodologies and techniques, we are a worldwide leader in tunnel and underground construction.

920
miles
RELEVANT FACTS
Road tunnels:
150
Railway tunnels:
160
Subway tunnels:
180
Water tunnels:
345
Mine:
85
TOTAL:
920

Most important projects by Specialty

Alaskan Way Viaduct Replacement - Seattle, USA

Located in Seattle, Washington, the 1.7 mile tunnel was constructed using a 57 feet diameter TBM; one of the largest EPB boring machines in the world. A single bore, bi-level design accommodates two lanes of traffic per level; each level maintains... view »

Crossrail C-305 - London, United Kingdom

Crossrail C305 was one of the largest contract in Europe at that time. Four Tunnel Boring Machines (TBMs) have been used to excavate through London Clay to construction of twin concrete lined tunnels.

The available waterways were critica... view »

Ottawa Light Rail Transit (LRT) - Ottawa, Canada

The new Light Rail Transit (LRT) project consists of 1.6 miles of underground rail and three stations at Lyon West, Parliament East, and Rideau. This concession contract not only includes the design and construction of the project but also mainten... view »

Northwest Rail Sydney - Sydney, Australia

This Design-Build contract in Sydney consisted of major rail and station works including the excavation of two 10 mile long tunnels, 20 ft in diameter, between the existing Epping Station and the new Bella Vista Station. Fifty-nine cross passages ... view »