Testing construction techniques for the A10 Zuid tunnel – come and watch

Would you like to see up close how we are carrying out these tests and learn more about the technology and the alternatives? Then register for one of the free guided tours on 18 or 26 March 2026. One of our public information officers from the Zuidas-Zuidasdok Information Centre will welcome you and take you to the test location. You will hear all about the construction of the tunnel (walls) and, of course, there will be plenty of opportunity to ask questions.

Register fast, because our guided tours generally book up quickly

Programme of the guided tours

• Date: Wednesday, 18 March at 14.30 and Thursday, 26 March at 11.00
• Meeting point: Zuidas-Zuidasdok Information Centre (WTC, Tower 5, Central Hall)
• Duration: approximately 1 hour
• Admission: free of charge

Construction pits

Preparations for the construction of the A10 tunnel in the centre of Zuidas are in full swing. A great deal is happening behind the scenes, but work is also taking place outside. In the area between the courthouse and the Buitenveldert cemetery, we are testing different methods for installing earth- and water-retaining walls. These are needed for the construction pits from which we will build the tunnel. Installing the retaining walls is quite a challenge in this busy area, right next to the A10 Zuid and sometimes only a few metres from existing buildings.

Different techniques

Several techniques are being considered for constructing the tunnel walls. Earlier this year, we investigated pressing sheet piles into the ground. At present, we are testing the so-called CSM wall, or Cutter Soil Mix. Put simply, a technique where you soften the ground, making it possible to slide the sheet piles into place. A milling cutter creates trenches and mixes the existing soil with a type of cement mixture. The sheet pile is then suspended in this mixture, after which the material hardens. It is an innovative technique that is being used more and more often because it helps to limit disruption.