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Bridge and Tunnel Borders

Name the countries that don't share a land or river border, but can be traveled between using a bridge or tunnel.
Quiz by HelveticaBold
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Last updated: November 30, 2017
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First submittedSeptember 8, 2016
Times taken44,922
Average score75.0%
Rating4.95
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Bridge or Tunnel
Country
Øresund Bridge
Denmark
Sweden
Channel Tunnel
France
United Kingdom
King Fahd Causeway
Bahrain
Saudi Arabia
Johor Causeway
Malaysia
Singapore
77 Comments
+34
Level 70
Sep 12, 2016
Great idea for a quiz. Thanks
+12
Level 71
Sep 16, 2016
Thank you for taking it ^_^
+3
Level 69
Mar 26, 2018
We need more! Talking to geography junkies here!
+11
Level 77
Nov 30, 2017
Strange how people only get one end of a bridge/tunnel?
+8
Level 77
Dec 2, 2017
I guessed Saudi Arabia based on the name of the bridge. but i had no idea where it went!
+2
Level 37
Mar 26, 2018
The Saudi Arabian bridge had to connect to one of the islands, so it would be either Qatar or Bahrain.
+55
Level 66
Mar 26, 2018
Qatar's an island now?
+12
Level 68
Mar 26, 2018
Qatar which isn't an island and shares a land border with Saudi Arabia?
+1
Level 47
Mar 26, 2018
I did the same for Scandinavian bridge
+8
Level 85
Mar 26, 2018
Never hurts to plan ahead
+12
Level 82
Mar 26, 2018
diva again bringing to bear his unique expertise on Asia.
+2
Level 70
Mar 27, 2018
Lex Luthor once tried to make Arizona beachfront property. Who know what designs the Legion of Doom may have for the Gulf states? And just don't have as much faith in Ben Affleck as Batman as I did his previous forebears. Sometimes the world feels like it's spinning out of control and I just don't know how many times Superman can spin it around backwards to make everything right again.
+1
Level 95
Mar 20, 2019
There is a project for a bridge to connect Saudi Arabia with Egypt.
+1
Level 89
Nov 28, 2019
I wonder how long it would take to stop the Earth's rotation completely and not cause massive waves and general destruction from inertia. The heat energy alone created by that genocidal jerk would cause catastrophic problems.
+1
Level 75
Apr 8, 2023
What? Who?
+1
Level 61
May 17, 2023
Superman, probably (see martay's comment a couple comments up)
+1
Level 60
Jun 20, 2020
Saudi arabia is actually digging a trench along the Qatar border, trying to make it into an island. It would be interesting to see how it would affect things once they finnish.
+10
Level 77
Jun 20, 2020
They not Finnish, they Arabic! ;)
+2
Level 82
Jun 22, 2020
I looked up the Saudi canal Folgore mentioned. Found this..

"The proposal includes building resorts with private beaches... and a dumping ground for nuclear waste."

Yeah that checks out. I remember driving past that huge green park in Riyadh covered in white dust because it was built right next to a gigantic concrete factory.

+3
Level 75
Nov 30, 2017
Nice one!
+4
Level 77
Nov 30, 2017
Short and sweet :)
+2
Level 76
Nov 30, 2017
Great!
+3
Level 76
Dec 13, 2017
Passport control between Bahrain and Saudi Arabia is on this island that separates the spans of the King Fahd Causeway. I've repeatedly tried to find where the border lies - down the middle of this island, or in the sea either side? A big chocolate fish awaits anyone who gets a definitive answer!
+6
Level 71
Dec 16, 2017
Well I suppose the point is you wouldn't be able to walk or drive between the two without the bridge. If the sea level dropped enough, one could walk from India to Sri Lanka, but then again, if the sea level dropped really far enough, you could walk to any country from any country! ......... with one exception, can you work it out?
+11
Level 57
Mar 26, 2018
North Korea & South Korea?
+1
Level 71
Mar 26, 2018
You could walk to China from South Korea and then walk to North Korea.
+1
Level 71
Mar 26, 2018
Good guess! But I think quite a number of very brave and lucky people have managed to walk from North Korea to South Korea (usually not the other direction, though).
+2
Level 74
Mar 27, 2018
You couldn't walk from any landlocked country to any other country, or vice versa, unless those countries already had a land border. Although, it would be possible in a few cases where a lake was previously in the way, like Turkmenistan to Azerbaijan.
+8
Level 28
Mar 27, 2018
It seems like it would be something in the Mediterranean, because if we drop the general sea level, the Mediterranean would stop draining once the general level dropped past the land connecting Spain and Morocco. So my guess is Malta and Cyprus.
+3
Level 58
Jun 20, 2020
Please I need the actual answer to this haha! Mediterranean would be two countries with Cyprus and Malta and Mr Font said it was just one exception.
+4
Level 75
Apr 8, 2023
Still waiting for this answer
+3
Level 82
Mar 26, 2018
I've passed through this border more times than I can remember.

The island was constructed artificially. Most maps don't draw international borders in water, but I've seen some maps with the border drawn to the west of the island (placing in the territorial waters of Bahrain), and some maps that bisect the island.

There is nothing of value on the island aside from a few fast food restaurants. With the close ties between the AlSaud and Khalifa families I'm sure it's not a point of contention. There might be something official but with Arab culture being what it is I think it's just as likely that there is an unofficial gentlemen's agreement to share the island.

Whether or not the island is fully within the territory of Bahrain or not, it certainly feels like a legitimate international border, so if nothing else maybe it could be said the Saudis are "leasing" their side.

+6
Level 82
Mar 26, 2018
There are McDonald's on both sides of the island. The one on the Saudi side obeys Saudi laws and closes five times a day for prayer times; there are different sections for men and women and no female employees. The one on the Bahraini side is open all day; seating areas and kitchen staff are all co-ed.
+3
Level 67
May 13, 2023
Ooh, a chocolate fish.
+1
Level 76
Dec 13, 2017
And the Johor Causeway is a true causeway - no bridge there any more. Does a man-made causeway mean Singapore now has one land border, rather than none?
+1
Level 71
Mar 26, 2018
No
+1
Level 76
May 13, 2023
Because?
+4
Level 62
Mar 26, 2018
Really funny quiz, thanks. I'm a North European and when I first saw this quiz I was astounded at how few "truly international" bridges and tunnels there are.
+1
Level 90
Mar 26, 2018
Well that's quite a jump from this quiz to your comment. There aren't a ton of cases where you have situations where two countries that don't border each other are close enough to connect via tunnel or bridge. About the only places without one that I can think of off the top of my head are across Gibraltar, between Eqypt and Saudi across the Red Sea and India and Sri Lanka and I'm not sure if the first two would be viable due to the depth of the water. A cursory look at Wikipedia shows there are at least 28 bridges between the US and Canada and 26 between the US and Mexico.
+7
Level 82
Mar 26, 2018
Sri Lanka and India used to be connected by a natural land bridge. They're in the process of building another causeway connecting Bahrain and Qatar. You could probably connect the Philippines to Malaysia or Indonesia but as both are archipelagos that wouldn't make much sense. Yemen is very close to Djibouti and Eritrea; but there's not a lot of commerce going between these countries. Malta might be possible to connect to Italy but Malta is tiny and I'm sure the cost/benefit analysis wouldn't be favorable. Northern Cyprus to Turkey might be another possibility; but I'm sure the Turks don't want to get further embroiled in the JetPunk argument over whether or not Cyprus is in Asia.
+2
Level 75
Apr 8, 2023
Another pointless, but technically possible, example is US-to-Russia at the Diomede islands. As it is, you could walk/drive between the two on ice for part of the year except that it's illegal.
+3
Level 62
Mar 27, 2018
Yes, I have to confess that I hadn't thought the implications of "no physical or river border" through. There are plenty of ongoing cross-border tunnel (and a few bridge) projects in my part of the world, but almost all of these countries have some sort of physical contact already.

Maybe a truly new one will be a tunnel between Finland and Estonia? It has been discussed for about a decade. Another one, as you mentioned, is a link between Spain and Morocco.

Apart from that... hmmm.... There are some Carribean islands that could be connected (as well as Trinidad with Venezuela) but I assume that there's too few inhabitants and too little cash for something like that.

+1
Level 82
Mar 27, 2018
I took a ferry from Tallinn to Helsinki. Then I drove to Turku to take the ferry from there to Stockholm because it was about 1/10th the price of taking the one from Helsinki.
+2
Level 82
Mar 26, 2018
There are many other bridges and tunnels that connect countries but most of them are excluded because bridges over rivers are excluded, and/or those countries also share a land border.
+1
Level 75
Mar 26, 2018
Wikipedia lists over 60 international bridges. This quiz is very specific and lists the few which provide the sole connection between the given countries. I agree, fun quiz.
+1
Level 81
Jan 20, 2023
Not quite sole connection.

But countries for which the only connections are via a bridge or tunnel, yes.

What's the distinction? There is a second crossing (also a bridge) between Singapore and Malaysia. So the Johor Causeway isn't the only connection between the two, but all connections are via a bridge (that is not over a river).

+1
Level 71
Mar 26, 2018
Well done, originally the quiz included countries separated by rivers, only traversable by bridges (such as North Korea/Russia, Laos/Myanmar) but they were removed because people get into arguments about what constitutes an artificial border and so on, and it's upsetting when people fall out.
+1
Level 82
Mar 26, 2018
Super easy for me. The only one of these bridges/tunnels I haven't used personally was the Johor Causeway. I've been to Singapore and Malaysia both a few times but never used the bridge.
+2
Level 71
Mar 26, 2018
Come on, there are still two countries that you can't walk between, whoever names them gets a kissy kissy, sorry can't give cookies.
+2
Level 71
Mar 26, 2018
If you don't want a kiss you can have a bonus question instead.
+1
Level 70
Mar 26, 2018
Is this if the sea level dropped so much there was no sea left?
+1
Level 70
Mar 26, 2018
Also is it impossible to access any country from these two countries? It can't just be that country A is impossible to access from country B , because then you could just go via another country.
+1
Level 71
Mar 26, 2018
Well yes you could go via another country, or you could fly, or jump really high. There's something in the way.
+1
Level 70
Mar 26, 2018
Bhutan? The Himalayas get in the way.
+7
Level 71
Mar 26, 2018
It's Tanzania and the Democratic Republic of Congo. Although they share a land border, it's made up entirely of water: Lake Tanganyika. =) Bonus question: which two countries once had a similar situation to Tanzania and DRC but not anymore?
+1
Level 29
Aug 3, 2022
this is a bit 4 years late, but maybe cameroon and chad because of lake chad?
+3
Level 45
Mar 26, 2018
I desperately typed "Singaproe" as it got down to the final second :(
+2
Level 34
Mar 26, 2018
You should add more questions, 8 is really short!!! Great quiz though :)
+4
Level 74
Mar 26, 2018
I was thinking that, but isn't it the case that these are the only four/eight in the world?
+1
Level 47
Sep 2, 2019
I've never heard of the Denmark-Sweden bridge before xD
+1
Level 49
Dec 11, 2019
Excellent quiz!!! I finished in 29 seconds. Good job on the timing!
+2
Level 55
Jun 20, 2020
Im pretty sure sri lanka and india are connected by bridge
+1
Level 70
Jun 20, 2020
Seconded
+2
Level 71
Jun 20, 2020
Actually Sril Lanka was once connected by a traversable ridge of limestone shoals called 'Adam's Bridge', but this is a natural formation not a manmade bridge, and nowadays it's not advisable to try and cross it.
+3
Level 56
Jun 20, 2020
There are actually two bridges connecting Singapore and Malaysia, the other being Tuas Second Link.
+1
Level 59
Dec 22, 2021
ok
+4
Level 59
Jun 22, 2020
I was expecting that this would be without hints, but the bridge/tunnel names make it pretty trivial.
+1
Level 45
Jun 26, 2020
I was just about the say the exact same thing.
+2
Level 65
May 18, 2021
sri lanka/india ?
+1
Level 60
May 13, 2023
No connection at the moment to my knowledge.
+4
Level 67
Oct 26, 2021
I mostly got this by thinking about countries that are close together but not touching.
+1
Level 71
May 13, 2023
That's beautiful.
+1
Level 65
May 13, 2023
What about Rama Setu?
+1
Level 66
May 13, 2023
Any updates on the Qatar Bahrain Friendship Bridge?

Is Qatar still being shunned by the Arabian peninsula? I never understood what was going on. Seems like some power struggle with various regional support.

+1
Level 51
May 13, 2023
I take the Øresund train every day :)
+1
Level 60
May 13, 2023
We might have to watch out for Trinidad x Venezuela.
+1
Level 67
May 13, 2023
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