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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

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Leveling the riverbed

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Placing scour protection

Protecting the pile.

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Installation and ballasting pillar

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Installation of bridge parts by tandem lift

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Dredging the tunnel trench

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Laying the tunnel foundation

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

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Locking fill, trench backfill and rock protection.

Placing the tunnel roof scour and anchor protection.

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Construction of building dock and water management

Immersable tunnel elements.

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Towing out and installation

Immersable tunnel elements.

Our projects

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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.