Beatrix Lock

  • 276 meter long
  • 2 existing chambers thoroughly renovated
  • 120 meter widening of the Lek canal
  • 27 years of maintenance

Near Nieuwegein, Jan De Nul is working on the extension of the most important inland navigation lock complexes of the Netherlands. As a member of the consortium Sas Van Vreeswijk, we are offering an overall solution that respects the historical heritage and architecture of the surrounding area.

Strong foundations for the future


Traffic on the Lek canal, a major waterway link between the ports of Rotterdam and Amsterdam, is steadily increasing. Every year, 50,000 ships pass through the Princess Beatrix locks, the only lock complex on this route. Waiting times are becoming longer and ships that have too deep a draught must make a detour. The Dutch Waterways and Public Works Agency wanteds to eliminate this bottleneck and signed a DBFM contract with the Sas van Vreeswijk consortium.

Sas van Vreeswijk is a project entity composed of both Belgian and Dutch companies. The name underlines the historic bond between locks, shipmasters and local residents and refers to the Belgian share (‘sas’ is a frequently used Flemish word for lock) in the joint venture. Jan De Nul, BESIX and Heijmans are responsible for the construction, widening and renovation works on the Princess Beatrix complex. Together with investors Rebel Valley and TDP, they are also responsible for financing the project. A DBFM contract makes the consortium responsible for the design, construction, financing and a 27-year maintenance period.

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