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DRAGADOS is a worldwide leader in bridge construction. Our projects are recognized by their sheer size, technical intricacy, use of the latest technologies, and innovative ideas for meeting and overcoming technical challenges.

World map showing the countries where building projects have been carried out (North America, Chile, Argentina, Brazil, Colombia, Great Britain, Portugal and Spain among others).

We have constructed more than 1,500 bridges of all types and sizes, including:

  1. Cable-stayed bridges
  2. Highway bridges
  3. Major interchanges
  4. High speed rail bridges
  5. Aqueducts

DRAGADOS, with 70-year corporate experience, provides a wealth of knowledge and expertise for the development of new and innovative ideas for our projects. Our engineers have worked with world renowned architects and engineers in the design and construction of some of the most complex signature bridges constructed by DRAGADOS. Some of our bridges are the best known signature bridges in the world.

Examine the projects executed

Most important projects per specialty

Vista frontal de la sección central del puente con el rio en la parte inferior de la imagen

Gordie Howe International Bridge - Ontario, Canada

Gordie Howe International Bridge (GHIB) will be, in terms of span length, the longest cable-stayed bridge in North America, spanning 853 m. It has two towers, one located in Windsor, Canada and the other in Detroit, USA and allows the crossing between the two countries over the Detroit River. The deck houses two carriageways, one for each direction of traffic. Each carriageway features three lanes, a shoulder, and a designated area for bicycle and pedestrian traffic. The deck consists of a mixed steel-concrete structure supported by 54 pairs of cable stays. The concrete pylons are over 200 m high, taking on an A-shaped design with a vertical section on top that houses the upper anchorages of the cables. In addition to the cable-stayed section, the GHIB consists of two approach viaducts measuring 1,417 m and 1,788 m in length.
Front view of a section of the bridge

Queensferry Crossing Bridge - Edinburgh, United Kingdom

This bridge crosses the Firth of Forth near Edinburgh and replaces the existing suspension bridge (Forth Road Bridge), which faced some deterioration problems and lacked a windscreen, resulting in regular closures due to high wind conditions in the area. With a total length of 2,637.5 m, the bridge is divided into approaches (eight spans ranging from 64 to 90 m with a total length of 617.15 m) and a main cable-stayed bridge. The cable-stayed bridge’s total length is 2020.35 m and features three pylons standing at 212 m in height and two main spans of 650 m each. During construction
Aerial view of the bridge over the bay of Cádiz

The new bridge over The Cadiz bay - Cadiz, Spain

TThe new bridge over The Cadiz bay crosses from the city of Cadiz to Puerto Real. The main bridge is a cable stayed deck with a 540 m main span, 200 m approach span and a vertical clearance for navigational purposes of 69 m. It is longer than any bridge of whatsoever type in Spain and than all but two of Europe’s cable-stayed bridges. The bridge can be divided into four distinct parts or sections: composite approach viaduct, steel simply supported removable section, cable-stayed section and a concrete box girder approach viaduct.
Front view of the central section of the bridge

Bridge over the River Barrow - New Ross, Ireland

Built between 1973 and 1977 and inaugurated in 1981, the Rande Bridge was at the time one of the largest cable-stayed bridges in the world with its 400-metre span. The bridge crosses the Rande Strait and is a key point on the AP-9 freeway, a vital route in northwest Spain. The increase in traffic made it necessary to widen the bridge to increase the capacity of the highway. The work carried out by Dragados was the first major extension of a cable-stayed bridge in the world, and was materialised by placing two lateral carriageways, one on each side of the existing deck. All the work was carried out without disrupting traffic on the existing deck, with minimal environmental impact on the Vigo estuary and reusing the existing structure as much as possible.