To main content

Tunnels
and bridges

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.

We minimize risks and uncertainties to deliver the solutions you need.

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.

Our tunnels and bridges solutions

chart_full_3d_configuration16_TunnelsBridges_09_large.jpg
1
DSC_5158__1_.jpg

Leveling the riverbed

2
IMG_6430_zonder_boegspriet_cropped__1_.jpg

Placing scour protection

Protecting the pile.

3
409A7665_-_Izmit_Turkije_-_aangepast_v1__2_.jpg

Installation and ballasting pillar

4
germany-stralsund-smit1.jpg

Installation of bridge parts by tandem lift

5
Freeway.jpg

Dredging the tunnel trench

6
09_Scrading1.png

Laying the tunnel foundation

Laying the gravel or sand-flow foundation using the screeding technique.

7
P1040065.jpg

Locking fill, trench backfill and rock protection.

Placing the tunnel roof scour and anchor protection.

8
A_03_b_Oresund_Dry_Dock.jpg

Construction of building dock and water management

Immersable tunnel elements.

9
04_Warnow.png

Towing out and installation

Immersable tunnel elements.

Our projects

Selected filters
Bahrain_header.jpg

Land reclamation, Shaikh Khalifa Bin Salman Causeway

The Shaikh Khalifa Bin Salman Causeway is located in the State of Bahrain in an expanse of water called the Khawr Al Qulayah. It connects the Hidd Drydock Highway to the Mina Sulman Port. This major infrastructure project is carried out in advance of the planned expansion of the Bahrain port activities. This New Port project is planned at the Hidd side and via the Shaikh Khalifa Bin Salman Causeway direct connected with the existing Mina Sulman port and Saudi Arabia. The total length of the Shaikh Khalifa Bin Salman Causeway is approximately 6,500 m, including a bridge of 400 m, which was constructed in 2000.

Oresund.jpg

Tunnel construction Øresund, Denmark - Sweden

The Øresund Tunnel forms part of the Øresund Link that connects the cities of Copenhagen in Denmark and Malmö in Sweden across the Øresund.

Chek_Lap_Kok__09-06-1995.jpg

Land reclamation Check Lap Kok airport Hong Kong

In 1996 Hong Kong was a modern city-state with almost 6 million inhabitants where air traffic was a very important component for economic activity. The old airport Kai Tak, with a single runway, was no longer able to cope with the growing number of passengers and amount of freight.  The authorities decided to build a new, bigger airport at a new location in Hong Kong, a 350 hectares hilly island off the coast about 28 km west of the city center.

More infra solutions

Land reclamation

Boskalis reclaimes land, improves soil, protects shorelines and realizes coastal contruction projects.

Coastal protection

Boskalis constructs traditional hard sea defenses and innovative soft sea defenses.

Environmental services

Boskalis provides a broad range of environmental services including remediation of contaminated land and dredged sediment.

Roads and railways

Boskalis develops, supervises and realizes multidisciplinary road and railway projects.

Inland ports and waterways

Boskalis designs, builds and maintains inland ports and waterways.