@corinnec To the other/south side we`ve a tunnel.
Westerscheldetunnel
At 6,600 metres, the Westerscheldetunnel is the longest tunnel in the Netherlands. Nearly 6 million people drive through the tunnel every year. The deepest point is 60 meters below NAP. The two tunnel tubes each have a diameter of 11 meters.
Westerscheldetunnel
At 6,600 metres, the Westerscheldetunnel is the longest tunnel in the Netherlands. Nearly 6 million people drive through the tunnel every year. The deepest point is 60 meters below NAP. The two tunnel tubes each have a diameter of 11 meters.
Ian
https://en.wikipedia.org/wiki/Chesapeake_Bay_Bridge%E2%80%93Tunnel