Tunnels

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

Today, having constructed more than 1,380 kilometers of tunnels, shafts, galleries and stations through a variety of geological conditions, utilizing diverse methodologies and all types of construction technologies, we are a worldwide leader in underground construction.

1,480
km
RELEVANT FACTS
Road tunnels:
243
Railway tunnels:
254
Subway tunnels:
293
Water tunnels:
555
Mine:
135
TOTAL:
1,480

Most important projects by Specialty

Alaskan Way Viaduct replacement - Seattle,USA

The Project is located in Seattle (WA) and for the construction of the 2.688 m of tunnel one of the world largest EPB machine has been manufactured (17,48 m).  A single bore design, double deck, one for each direction, with two lanes allowing... view »

Crossrail C-305 - London, United Kingdom

This contract is the largest of the Crossrail projects and part of the biggest construction project in Europe at this time.

It has been constructed twin, concrete lined tunnels using four Tunnel Boring Machines (TBMs) and mining mainly t... view »

Ottawa LTR - Ottawa, Canada

The new Light Rail Transit alignment runs in an underground scheme along 2,533 meters and three stations are allocated on it, Lyon (West), Parliament (East) and Rideau. Being a concession contract the scope of it is not only the design and constru... view »

North West Rail Link Sídney - Sydney, Australia

This design and build contract in Sydney includes:

  • 15.5km long and 6.17m inner diameter twin tunnels between the existing Epping Station and the new Bella Vista Station.
  • 5 stations with excavation of approx. 180m long ... view »