14 votes How immersed tube tunnels are built Posted May 23 by cfabbro Tags: usa.md.baltimore, fort mchenry tunnel, tunnels.undersea.immersed tube, prefabs, docks.dry, transport, maritime, ships, boats.tug, barges.lay, dredging, foundations, vessels.rock dumping, jacks.hydraulic, backfilling, bulkheads, construction, infrastructure, roads, author.grady hillhouse, videos, practical engineering, source.youtube https://www.youtube.com/watch?v=jPJCYrxqyT8 Link information This data is scraped automatically and may be incorrect. Title The Most Implausible Tunneling Method Authors Practical Engineering Duration 15:32 Published May 20 2025