Aduarderzijlen lock complex

What did we do?

1. Replacement and restoration of the bridges. Since this is a national historic landmark, the bridges were restored in an authentic manner.
2. Restoration and renovation of theAduarderzijlen. The mortar joints and masonry were in poor condition in many places. The area was drained prior to the work. This was a major part of the project because the waterway had to be closed for several months to allow for the work.
3. Landscape modifications and the realise small-scale recreational facilities. A landscape historian and a landscape architect were brought in for this purpose.
4. It realise of natural banks at the Aduarderzijlen along the Aduarderdiep.
5. The plans are detailed in the drawings below. Drawings 1 through 3 pertain to the western bridge/lock (Westerzijl), and drawings 4 through 7 pertain to the eastern bridge/lock (Oosterzijl).

Video restoration

Restoration of the Aduarder Sails - November 2024

Video description

The historic Aduaderzijlen lock complex, built in 1867, is situated in one of the most beautiful spots in the Groningen countryside. A remarkable landmark at the intersection of waterwaysa popular spot for cycling, canoeing, or boating while enjoying the sweeping views. 

In 2022, the national monument was in need of a major renovation. Noorderzijlvest Water Authority restoring the two locks and their accompanying bridges. First, construction pits were dug, after which the water was pumped out of the locks. The joints were chiseled out, and the masonry and natural stone were repaired. Everything was restored in an authentic manner—true artisanal craftsmanship. 

By mid-2023, the traditional craftsmanship was complete, and the locks shone in renewed glory. Once the work was finished, the locks shone in renewed glory, and the surrounding area was enhanced with landscaping and recreational amenities. These included new paths, boat docks, and a parking lot. 

This video was commissioned by the Noorderzijlvest Water Authority and made possible by: Tennet, National Programme Groningen. In collaboration with: Groningen provincial executive, Westerkwartier Council, Farmers, citizens, and rural residents of Aduarderzijl and surrounding areas.
 

Drawing plans

If for any reason you are unable to view one of the documents, please send an email to l.meyer@noorderzijlvest.nl.

• Drawing of Westerzijl - overview (5.1)
• Drawing of Westerzijl - dimensions (5.2)
• Map of Westerzijl - Contour Map (5.3)
• Drawing of Oosterzijl - overview (6.1)
• Drawing of Oosterzijl - dimensions (6.2)
• Drawing of Oosterzijl - new (6.3)
• Map of Oosterzijl - Contour Map (6.5)

Renovation Layout Plan for Aduaderzijl

The development plan (PDF) was adopted by the Aduarderzijl project group (comprising the Municipality of Westerkwartier, the Province of Groningen, and the NZV Water Board) as part of the Aduarderdiep area plan. The development plan for additional measures regarding recreation and landscape in Aduarderzijl. realisation these additional measures was made possible by a grant from programme National programme and a contribution from the TENNET Landscape Compensation Fund.

Aduaderzijl Renovation Layout Plan.pdf

Documents (Dutch only)

If for any reason you are unable to view one of the documents, please send an email tol.meyer@noorderzijlvest.nl.

• Aduarderzijl Landscape Plan, April 2022 – Preliminary Design.pdf

Following the^second public open house in Aduarderzijl in December 2022, the design plan for the small-scale, recreational, and landscape elements has been customised.

• customised proposal for Aduaderzijl (floor plan) - Feb 2023.pdf

Video

Drone footage (August 2023): This aerial view shows the old western lock and the eastern tunnel lock. Both locks are currently undergoing restoration. This involves replacing damaged mortar, securing loose stones in the masonry, and refurbishing the natural stone elements. The wind-powered mechanisms at both locks are also being addressed. All in all, this is a complete restoration of a truly beautiful spot in our water board area. The white farmhouse in the background is the historic Waarhuis. It was once home to the King and the Lady, who played a crucial role in controlling access to the Aduarderdiep and, by extension, the city of Groningen.  

Photos