At a rate of approximately 10 centimetres per hour, we raised the mill over the course of two days to a position 90 centimetres above its original level. Over the coming days, the permanent support structure will be completed. The mill will then be lowered by 10 centimetres to its final elevation.

Why was the mill raised?

As part of the Tiel-Waardenburg dyke reinforcement project, the surrounding dyke has been raised. Without intervention, the mill would have lost a significant amount of wind exposure. By permanently raising the monument by 80 centimetres, the mill’s wind catchment area and historic setting are preserved, allowing it to continue operating for generations to come.

The two lifting days were preceded by a lengthy period of preparation and engineering challenges. During the works, it became apparent that the existing foundation differed from the original drawings. As a result, the mill was provided with a new foundation supported by 18 screw injection piles.

And for those wondering why the mill still appears slightly tilted: this was a deliberate decision. The existing, historic lean of the structure has been preserved.

Sustainability also played an important role in the project. Our jacking computer and hydraulic system were powered by energy packs, enabling us to work with low emissions and minimal noise.

More than engineering

For us, this project is a great example of how craftsmanship, heritage preservation and flood protection can successfully come together. We are proud to contribute to safeguarding this iconic piece of Dutch heritage for the future.

Our thanks go to all parties involved for their trust and excellent cooperation: Waterschap Rivierenland, Bouwcombinatie Mekante Diek (Ploegam, Van Oord and Ballast Nedam), Geldersch Landschap & Kasteelen, Techniek en Methode (consultancy for construction methods and heritage engineering), Jan-Willem Oome (consulting engineer), DST, Hadek, SIN, Molenbouwer Berkhof, and Bekker Communicatie (Stephanie Bekker).

📸 Photo credit: Cees van der Wal Fotografie.