As we look toward ITA WTC2027 in Antwerp, the Oosterweel Connection stands as a masterclass in overcoming extreme urban and maritime constraints. This isn’t just a capacity project; it is a high-stakes demonstration of modern tunnelling methodology.

The Scheldt Crossing: Millimeter Precision at 60,000 Tons

The centrepiece is the Scheldt Tunnel, a 1.8Km immersed tube. Due to the lack of space in Antwerp’s port, eight massive elements—each weighing over 60,000 tons—are being pre-cast in Zeebrugge. The technical challenge? Towing these giants across the North Sea before immersing them into a tidal river with millimeter precision.

The ‘Paperclip’ Junction: Deep-Pit Integration

At the heart of the project lies the Oosterweel Junction, a massive underground interchange nicknamed the “Paperclip” for its complex, braided geometry.

• The Excavation: A 29-meter deep pit (equivalent to a 9-story building) with a 3 km circumference.
• The Method: Using a 7-phase construction sequence to manage soil pressure and stability in a dense urban environment.

The Canal Tunnels: The Vertical Stack

Perhaps the most daring feat is the Canal Tunnels. To navigate the narrow Albert Canal, engineers have opted for four stacked tunnel tubes. By utilising deep diaphragm walls to hold back the canal’s volume, the team is constructing this multi-story underground highway in an active maritime channel only 20 meters deep.

Why visit during WTC 2027?

The Oosterweel Link represents the pinnacle of Subsurface Urbanism. From the reuse of excavated materials to the innovative NEC4 contracting model, this is where the future of the industry is being built.

Thank you Lantis for this stunning update on the Oosterweel Connection. We could not be more proud to have you as a partner of ITA WTC2027!

See you in the pit at WTC2027!