Successfully immersed: first tunnel element Maasdeltatunnel
Rijkswaterstaat, construction consortium BAAK (Ballast Nedam and DEME) and partners have successfully immersed the first tunnel element of the Maasdeltatunnel in the Scheur in Rotterdam. This major operation was prepared for months and was carried out with extreme precision on Friday 31 March 2023.
Sinking during neap tide
The Scheur is a tidal river, so the water moves with the ebb and flow of the tide. On the day of the operation, the water was at neap tide. During this, the difference between high and low tide, and thus the flow, is minimal. This occurs about once every 14 days and provides favourable conditions for immersing.
After immersing and connecting this tunnel section, leakage occurred, which was professionally repaired. The waterway was then reopened to maritime traffic. In the meantime, work continues, such as applying the sand under the tunnel element for the final foundation.
Rijkswaterstaat and construction consortium BAAK appreciate the patience of the maritime traffic and thank all parties who contributed to solve this situation as soon as possible. On Saturday, 15 April, the tide will be neap again. That is when the second half of the tunnel will be immersed.