Yes provide useful infrastructure but not waste. The channel tunnel project between UK and France went bust owing gazzilions that will never be recouped even with the state aid both countries gave, and a rail tunnel between Ireland and GB would cost many many multiples more due to the distance and geology, yet with a tiny population and tiny freight tonnage compared to larger EU countries. Sorry but a tunnel makes absolutely no economic sense due to the size of our economy and the small size of our population.