Boskalis designs, develops and constructs bridges and tunnels, providing solutions covering the entire process. For bridge construction over a river or estuary we first level the riverbed, install the bridge pillars or piers, and provide scour protection. Bridge parts can be installed by tandem lift. Underwater tunnel construction involves dredging the tunnel trench before laying the tunnel foundations. We also excavate construction sites for immersible tunnel elements that are then towed out and installed before backfilling the tunnel trench.
Top grade tunnel and bridge solutions
Designing, developing and constructing bridges and tunnels is technically complex and economically challenging. Boskalis provides design and environmental expertise. We employ innovative surveying and installation techniques and specialist materials.
Our track record speaks for itself. Over the past few decades, we have been involved in a large number of tunnel and bridge projects, including the Øresund immersed tunnel connecting Denmark with Sweden, and the Stralsund bridge in Germany.
Top-class tunneling
Øresund tunnel, Denmark-Sweden
The Øresund Tunnel covers a distance of more than 3.5 kilometers and is part of the direct link between Copenhagen in Denmark and Malmö in Sweden. The Scradeway installed gravel foundations on the trench bottom with extreme precision.
Coatzacoalcos, Mexico: first immersed tunnel in Latin America
In 2013, in Coatzacolacos on the Gulf of Mexico, Boskalis Dragamex completed the construction of the first immersed tunnel in Latin America. The project involved building a 700-meter-long, four-lane tunnel link.
Warnow Tunnel, Germany
Boskalis was responsible for the dredging, backfilling and rock protection works. The immersion of the elements and the installation of the foundation bed was carried out in joint venture.