How Norway is Building a $47B Tunnel That Floats Underwater

Norway is building a floating underwater tunnel — and nothing like it has ever existed. The E39 highway crosses 7 fjords today by ferry. In winter, those ferries cancel. Ambulances wait. People miss hospitals. That's why Norway is spending $47 billion to replace all 7 crossings. Most of them with bridges and conventional tunnels. But four fjords are too deep, too wide, too difficult for anything normal. For those four — Norway is building the world's first submerged floating tunnel. Two concrete tubes. 30 metres below the surface. Ships pass above. Cars drive through. The idea was patented in 1919. Nobody built it. Norway is the country that finally will. This is the complete Engineering timeline — from the 1,300-metre-deep Sognefjord to the Rogfast tunnel already under construction right now. 🔔 Subscribe for weekly megaproject documentaries #FloatingTunnel #Megaprojects #NorwegianFjord #Engineering #Tunnel #Construction ⚠️ IMPORTANT: ABOUT THIS VIDEO ------------------------------------------------------------------- This is an educational documentary analyzing the engineering and construction of public infrastructure, based entirely on open-source information. All visuals and animations are 100% synthetic, AI-generated conceptual representations. No real footage of the construction sites or personnel was used. This video is purely informational and intended for educational purposes only. Music from #InAudio: https://inaudio.org/ Track Name. Lifeline