Have you ever seen/heard of the Øresund Bridge? It’s a five-mile-long bridge (and underwater tunnel!) that connects Sweden and Denmark. It opened in 2000 and combines both motorway and railway travel.
The underwater highway is 2.52 miles long and is named the Drogden Tunnel. Two tubes in the tunnel carry railway tracks, two carry roads, and a fifth tube is provided for emergencies.
You can read all the details about this bridge here. Here’s a video that highlights the engineering feats of this bridge.
If anyone has travelled across this bridge, let us know!
DCG