WI. A causeway was built between Dun Loagare (Eire) and Holyhead (UK) connecting both countries allowing a 6 lane motorway plus high speed and freight rail lines.
I'm thinking of a causeway at least a mile across, and up to 50 ft high to avoid inundation with waves in stormy weather.
Plus a quartet of suspension bridges in the centre of the causeway allowing sea going traffic to traverse the Irish Sea, via north or south, each bridge connected by a man made island.
Would this be plausible?
Would this be able to be built using today's technology?
What would the environmental impacts be?
regards filers.