No. The northbound and southbound run simultaneously, in exactly the same way, the trains to London and back to Brighton do.
When there is maintenance, the trains will only run one an hour, and the points changed.
The Channel is the busiest waterway in the world, with massive container ships passing through every day, and he wants to build a bridge! It couldn't be used when it's windy, because of the height, and security would need to be tighter than at Eurotunnel.
He has also said, there is only one...