When Sweden and Denmark built a connection between their countries, Sweden preferred a bridge, and Denmark preferred a tunnel, they each built their half and connected them in the middle with an artificial island. The Øresund Bridge is unique in the world.
There’s one in Virginia, the Chesapeake Bay Bridge Tunnel. There are two tunnels segments to go under major shipping channels. There are major naval bases upstream, and it was considered a national security risk to have a fleet potential trapped behind a downed bridge.
along with the Hampton Roads Bridge-Tunnel right next door
The Hong Kong-Zhuhai-Macau Bridge is another one. It’s a bridge most of the way but there’s one section that’s a tunnel.
I drove the Chesapeake Bay Bridge tunnel back in the 70’s with my mom on one of our trips.
The justification for the additional expenditure and complexity related to digging a tunnel for part of the way, rather than raising that section of the bridge, was to avoid interfering with air traffic from the nearby Copenhagen Airport, to provide a clear channel for ships in good weather or bad, and to prevent ice floes from blocking the strait. The bridge received the 2002 IABSE Outstanding Structure Award.
canada needs this to go underneath the USA straight to mexico so we dont have to drive through that god forsaken country
It’s not like Denmark “preferred” a tunnel, it’s just there is an island and waters are shallow, so they didn’t need to go all-out “hammer supports in the sea”
There’s a good Scandinavian crime series named ‘The Bridge’. It features this bridge.
Apt
I’m a little bummed it isn’t called the Brunnel.
And then back in to a bridge again!
So you learned about one of the 50 such constructions in my Cities: Skylines city. Wait till you see the rest.
Was this built to predict the rise in water levels from ice caps melting? I’m curious if that was engineered in as a potential issue or not.
Another one of those needlessly expensive “because we could” projects.
Funnily enough it’s expected to fully pay back the cost it took to build via user fees, and it was financed by loans. Which means taxes weren’t even used for this. And that’s not even mentioning the indirect benefits the two countries had
Sounds incredibly wrong but ok
