The Øresund Bridge transforms into an underwater tunnel
This is a unique cable-stayed bridge with a sunken tunnel road and railway system that includes an artificial island and connects Denmark with Sweden. The combined roadway and rail-line bridge span nearly 8 kilometers before transitioning into an underwater tunnel for the final 4 kilometers. This is certainly a wonderful work of engineering.
The motorway, which has been opened since July 2000, also carries a large data cable critical to internet connectivity throughout Europe. Indeed, the bridge is the longest road and rail bridge on the European continent, and it has received numerous design and engineering awards.