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.
TIL about a bridge that turns into a tunnel
https://en.wikipedia.org/wiki/%C3%98resund_Bridge
38 Comments
mercano@lemmy.world · 65 pts · 298d
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.
mountaincalledmonkey@sopuli.xyz · 22 pts · 298d
along with the Hampton Roads Bridge-Tunnel right next door
ray@sh.itjust.works · 15 pts · 298d
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.
prettybunnys@piefed.social · 9 pts · 298d
Driving over from Hampton into Norfolk and seeing the carriers at dock is pretty cool.
Makes them look tiny relative to how large they actually are.
higgsboson@piefed.social · 7 pts · 298d
By contrast standing 100ft away is more like looking up at a freaking skyscraper.
Bebopalouie@lemmy.ca · 2 pts · 297d
I drove the Chesapeake Bay Bridge tunnel back in the 70’s with my mom on one of our trips.
Diddlydee@feddit.uk · 26 pts · 298d
That's nothing. There's a magic farmer near me. His tractor turns into a field.
Onomatopoeia@lemmy.cafe · 7 pts · 298d
Hahaha
someguy3@lemmy.world · 22 pts · 298d
IWW4@lemmy.zip · 20 pts · 298d
That bridge it not unique at all. There is one in Virginia.
allan@lemmy.blahaj.zone · 6 pts · 298d
Every bridge is unique in the world, probably! But yeah, a silly sentence...
IWW4@lemmy.zip · 3 pts · 297d
That is actually a very good point. All bridges are unique to the environment they are built and operate in.
Bishma@discuss.tchncs.de · 5 pts · 298d
Virginia's exists because the navy was worried that a bridge accident or attack could cut off Norfolk Naval Station from the Atlantic. Submarines cross under the bridge though.
IWW4@lemmy.zip · 2 pts · 297d
I always figured the Navy drove the decision making on that bridge. I haven’t driven over it in a long time but going over that bridge and seeing an aircraft carrier coming and going is so cool.
1985MustangCobra@lemmy.ca · 17 pts · 297d
canada needs this to go underneath the USA straight to mexico so we dont have to drive through that god forsaken country
toofpic@lemmy.world · 14 pts · 298d
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"
goldenbug@fedia.io · 17 pts · 298d
IIRC the Island is artificial and the reason a tunnel was made was because the entry point would be too close to the airport, endangering the airport and the bridge.
cosmicrookie@lemmy.world · 15 pts · 298d
you are both right
toofpic@lemmy.world · 1 pts · 297d
Yes, I didn't say they didn't do anything, I only said "there's an island and the waters are shallow":)
But it's generally cheaper to dig and cover, thatn to build in the air.
DudeImMacGyver@kbin.earth · 12 pts · 298d
A brunnel? A tridge?
belathus@lemmy.blahaj.zone · 5 pts · 298d
They call the Virginia one a bridge-tunnel. The Chesapeake Bay Bridge-Tunnel.
Valmond@lemmy.world · 1 pts · 297d
A schtrumpf - tunnel or a bridge - schtrumpf ?
Onomatopoeia@lemmy.cafe · 10 pts · 298d
I do not think that word means what you think it means.
There's been a bridge/tunnel in Virginia since the 60's, crossing the mouth of the Chesapeake bay where it opens to the Atlantic.
LumiNocta@lemmy.zip · 9 pts · 297d
I've driven over this bridge about 4 times. And each time I was in awe of the views and the architecture. It's a very nice drive but can be a bit scary when you're on the bridge with higher winds.
It brings you to Sweden from Denmark and vice versa ofcourse. It does cost some money to cross as it is a toll road.
Schlemmy@lemmy.ml · 8 pts · 297d
There's a good Scandinavian crime series named 'The Bridge'. It features this bridge.
Zoomboingding@lemmy.world · 2 pts · 297d
Apt
chillpanzee@lemmy.ml · 6 pts · 298d
I'm a little bummed it isn't called the Brunnel.
guynamedzero@piefed.zeromedia.vip · 6 pts · 298d
I just woke up and I was staring at the thumbnail of the article for too long, waiting for it to be a gif of the bridge transforming
BradleyUffner@lemmy.world · 4 pts · 298d
And then back in to a bridge again!
DupaCycki@lemmy.world · 4 pts · 297d
So you learned about one of the 50 such constructions in my Cities: Skylines city. Wait till you see the rest.
rah@hilariouschaos.com · 3 pts · 298d
Like a Transformer...?
Shirasho@lemmings.world · 3 pts · 298d
This sort of bridge is featured in the last level of every Ace Combat game.
WindyRebel@lemmy.world · 1 pts · 297d
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.
Hupf@feddit.org · 0 pts · 297d
https://youtube.com/shorts/ifILeIpnEjs
FunctionallyLiterate@lemmy.ca · -18 pts · 298d
Another one of those needlessly expensive "because we could" projects.
FishFace@piefed.social · 8 pts · 298d
Or maybe it was expensive but recouped huge amounts due to enabling travel between the two countries, which facilitates all kinds of economic activity
TrickDacy@lemmy.world · 2 pts · 298d
Sounds incredibly wrong but ok
SkyeStarfall@lemmy.blahaj.zone · 2 pts · 297d
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