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The Afsluitdijk

  • Period: 2020 - ...

The Afsluitdijk, a 32-kilometer-long water barrier between North Holland and Friesland, has acted as a physical barrier for 90 years, separating IJsselmeer from Wadden Sea. This imposing dike plays a vital role in protecting the Netherlands from flooding.

De Nieuwe Afsluitdijk

Rijkswaterstaat (Dutch Ministry of Infrastructure and Water Management) and De Nieuwe Afsluitdijk, a partnership between the provinces of North Holland and Fryslân and the municipalities of Hollands Kroon and Súdwest-Fryslân, are collaborating to reinforce and upgrade Afsluitdijk, to make the water barrier ready for the future again.

De Nieuwe Afsluitdijk intends for Afsluitdijk to become an example of sustainable innovation in energy, economy and ecology. In specific terms, this concerns examining the expected sea level rise by the year 2120 and its effect on Afsluitdijk.

SBE’s role

This separation between IJsselmeer and Wadden Sea contains several civil constructions such as several navigation locks and vertical rising sluice gates. To protect the Netherlands in the future from the expected sea level rise and associated storms, it is not only Ijsselmeer that needs to be protected but also the existing and new navigation locks will be provided with an appropriate storm surge barrier.

Within this framework, SBE is working on the following subprojects of De Nieuwe Afsluitdijk:

  • Kornwerderzand guard lock rolling gate
  • Den Oever storm surge barrier guard lock with collision protection
  • Walkway at Vlietermonument
  • Traffic viaducts

Sub projects

  • Installation of the roller shutter gate at Kornwerderzand lock

    Kornwerderzand guard lock

    The Kornwerderzand guard lock is a steel rolling gate that is designed to operate at high tide. The lock is part of the 32-km-long Afsluitdijk. This dike is currently undergoing a major renovation and reinforcement operation to continue to protect the Netherlands from rising sea levels.
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  • Keersluis Den Oever  - aanvaarbeveiliging open toestand

    Den Oever guard lock

    The storm surge barrier at the existing Den Oever guard lock will be located in front of the existing guard lock and will consist of miter gates. To protect these miter gates from collision, a separate collision protection, located in front of the gates, will also be provided.
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  • Walkway at Vlietermonument - The Afsluitdijk

    Walkway at Vlietermonument

    To restore the iconic Vlietermonument to its former glory, the walkway near it was demolished. The new walkway was built to the east of Vlietermonument.
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  • Traffic viaducts A7 The Afsluitdijk

    Kornwerderzand and Breezanddijk traffic viaducts

    The substructure of the Kornwerderzand and Breezanddijk traffic viaducts were recalculated for contemporary traffic loads and reinforced to guarantee structural safety.
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Recent projects

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