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How modern highways are built 

Interesting Engineering
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Highways are some of the most important pieces of transportation infrastructure around the world. 🧐
Ever wonder how highways are built? Watch this video to learn how highways are built!
Next time you’re traveling across the highways of the world, you’ll appreciate the immense amount of engineering and planning that goes into them.
Do you take highways for granted? Did you ever wonder what is the amazing engineering behind them? 🤓
To get the latest science and technology news, subscribe to our newsletter “The Blueprint” at bit.ly/3BDdN5e
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29 сен 2020

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Комментарии : 426   
@Interestingengineeringofficial
@Interestingengineeringofficial 4 месяца назад
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@pikachugurung
@pikachugurung 3 года назад
Nepal be like: Wait! What? We don't construct like this way. We are too fast; just pour few inches of tars. DONE ✌
@sauravbhattarai5689
@sauravbhattarai5689 3 года назад
haha
@vijanbhandari1684
@vijanbhandari1684 3 года назад
Nope we use Asphalt these days
@prazwalkarkee1204
@prazwalkarkee1204 3 года назад
@@vijanbhandari1684 *we've barely started using
@rakshakkhatri6445
@rakshakkhatri6445 3 года назад
Inches lmao we use Centimetre
@himalayalamichhane4046
@himalayalamichhane4046 3 года назад
k xa bro haru ko khabar
@deepakkj
@deepakkj 3 года назад
We Indians have 2 more pre steps before starting to build highways here. Step -1 : Land acquisition Step 0: Protest from locals Then we follow other steps mentioned in this video 😅
@akashgurjar9726
@akashgurjar9726 3 года назад
Fake NGO😂😂😂😂
@akshaypendyala
@akshaypendyala 3 года назад
Step 1 is not exclusive to india, in every country land acquisition is done
@lantherpagdi
@lantherpagdi 3 года назад
not locals only vested interest NGOs and now that their funding has been looked into, they are no longer a menace
@otomackena7610
@otomackena7610 3 года назад
NGO and 1000's of PIL in courts too
@sagarkb3149
@sagarkb3149 3 года назад
Fake ngos😭
@emreevo8
@emreevo8 3 года назад
Third world countries: "You underestimate my level of corruption."
@lantherpagdi
@lantherpagdi 3 года назад
speak for your country please.. there are a lot of countries making monumental progress
@JR-xn6yu
@JR-xn6yu 3 года назад
@@lantherpagdi I visited Mexico for Halloween weekend. My entire body felt numb after a 10m taxi ride.
@defencebangladesh4068
@defencebangladesh4068 3 года назад
Actually we have been doing great
@sathvikpasumarthy
@sathvikpasumarthy 3 года назад
I think you should know that Switzerland is also a Third World Country. First know the meaning of words before using it.
@emreevo8
@emreevo8 3 года назад
@@sathvikpasumarthy I don't think so. *A Third World country is an outdated and offensive term for a developing nation characterized by a population with low and middle incomes, and other socio-economic indicators.*
@ahmadfahim5599
@ahmadfahim5599 2 года назад
We need to appreciate the efforts of our amazing architects and engineers who have gone to great lengths to build roads that are safe for us to use.
@asjoshan7332
@asjoshan7332 3 года назад
Seems like, engineers in our country just pour tar on a place and call it as road 😶😶
@rh5301
@rh5301 3 года назад
no offense, but we dont. thank you!
@LucarioBoricua
@LucarioBoricua 3 года назад
@@rh5301 Actually, this is more common than what it seems. For instance, I've studied old maps showing dirt paths and bridle roads, compared them with modern maps of the same areas and I'm able to match these paths to local paved roads. It's common for local roads in the countryside to arise from paving these old paths and then designating them as highways. Mind you, this is in the broad civil engineering sense (all engineered roads of higher hierarchy compared to a local street), not specifically the high capacity and free-flowing types (freeways/turnpikes/motorways/expressways).
@edim108
@edim108 3 года назад
As someone living in Poland, that absolutely was the case a few years back. If a highway was built in 2005, it required serious repairs by 2007 and by 2010 it needed to be basically built from scratch... Only recently did they start making roads that will actually last for more than 5 years, which would be funny if not for the fact that per kilometre the highways cost more in Poland- a country that's basically as flat as it gets in Europe- than in Norway.
@nnamdiejiofor3985
@nnamdiejiofor3985 3 года назад
3 years in Engineering School explained in just over 6 minutes
@mcfourth
@mcfourth 3 года назад
Explained in 6 minutes. Years of building.
@nsiobotetukudo3334
@nsiobotetukudo3334 3 года назад
Not even close
@abisrizvi2621
@abisrizvi2621 3 года назад
No
@Swede.from.Boston
@Swede.from.Boston 3 года назад
This is a joke.
@Tyzon201995
@Tyzon201995 3 года назад
Seriously?
@Mizaboutique
@Mizaboutique 3 года назад
Algeria be like: we don't do that here 😂
@ahcene05
@ahcene05 3 года назад
Hada wine jatni fi bali 9olt wtf 😂 andna ma kech kamel hed el process igoudrouniw berk :')
@OFADMA
@OFADMA 3 года назад
هههههههه ، للاسف
@Triadii
@Triadii 3 года назад
Lmao
@ankit_sangeet
@ankit_sangeet 3 года назад
Recently in India, 15 mile/25km Highway was built just under 24 hours and it came in the news.
@NativeVsColonial
@NativeVsColonial 3 года назад
Sources to verify?
@rakeshswami11
@rakeshswami11 3 года назад
@@NativeVsColonial i live by the highway & i had no idea about it😝. Yes they did. Most part 16 km was ring road (newly constructed), so not a single vehicle except construction equipment to bother ongoing work.
@NativeVsColonial
@NativeVsColonial 3 года назад
@Vk Tri What?
@iip8948
@iip8948 3 года назад
@@NativeVsColonial its true and actually just 18 hours for 25km of road m.economictimes.com/news/economy/infrastructure/nhai-develops-single-lane-of-25-54-kms-road-in-record-time/articleshow/81253705.cms
@Twiggy163
@Twiggy163 3 года назад
@@iip8948 From what I get from the source, that was just the asphalting work. None of the surveying, designing or groundwork was factored in. They didn't build the road in under 24 hours, they put the tarmac on that road in under 24 hours. Also from the source: ''It is not done end-to-end but they have done it in five different places at the same time." Each team did 5.1km in 18 hours. or 283m per hour. Tbh, I'm not that impressed when we factor 360m to 600m per hour (depending on the thickness of the tarmac). If it's not just the asphalting work and its the whole deal, yea. thats fast.
@mayur4699
@mayur4699 3 года назад
Only 90s kinds know abt Bitumen in India now. Those concrete roads are durable but floods during heavy rain.
@Student17625
@Student17625 3 года назад
In India, bitumen roads are still being built, actually 100% use bitumen.
@mayur4699
@mayur4699 3 года назад
@@Student17625 not where I live. The small streets are concrete and tiles now.
@amalkallarackal9293
@amalkallarackal9293 3 года назад
@@mayur4699 that's corrupt local bodies because they can rip off a bigger amount from the same and say a big f u to road users who have to suffer the bumps and uneven tiles over time. Then they can rip it all off again and bleed even more money from taxpayers. Thankfully the nhai is using bitumen
@DipinManmadhan
@DipinManmadhan 3 года назад
Still large percentage of the roads are built using bitumen. Concrete is used sparsely where I live
@mayur4699
@mayur4699 3 года назад
@@amalkallarackal9293 actually ppl here complained abt bitumen roads. They don't even last a year. So they replaced all the road with concrete. But Bcoz of that shops which are little below from road length started to flood.
@mohdadnan3750
@mohdadnan3750 3 года назад
One of the best engg channel in my subscription list good job keep it up
@Virttreks
@Virttreks 3 года назад
Wish he would've explained the bridge part of a highway such as getting it started. That would be an awesome video in of itself though
@realtalk169
@realtalk169 3 года назад
Not in dominica they have all these procedures, they just bulldoze the road and pour asphalt.. What happen happens.
@robanzzz5124
@robanzzz5124 3 года назад
"They don't just consider the transportation problems of today but also think and plan out many decades into the future" Australia has entered the chat Engineer has left the chat
@MrTripleXXX
@MrTripleXXX 2 года назад
I don't get it man and I'm Australian. Enlighten me haha.
@woodenhorse9943
@woodenhorse9943 3 года назад
I wish all these processes were used in my country as well..Nepal....here the highways are planned for incresing corruption and looting national budget!!☹☹☹☹
@chana70
@chana70 3 года назад
Thats every country. Even in America but its mostly written of as wastage or increase in budget.
@edim108
@edim108 3 года назад
I live in Poland and our highways cost more per kilometre than in Norway, and you couldn't tell bc after 3 years they need extensive repairs and after 5 they need to be rebuilt bc they were built to suck money out of the budget, not to be actually good roads. Only 3 years ago did they start making highways that'll actually last for more than 5 years...
@woodenhorse9943
@woodenhorse9943 3 года назад
@@edim108 in my country highway made in the 1970's(thats 50+years) is still running without any repairs...no but its not because it was well made it is just because their are such things like repairs...here the corrupted government runs whatever the condition
@bromomento5913
@bromomento5913 3 года назад
Damn if only my country does this, The road wouldn't look like Mars' surface.
@saniddhyanigam433
@saniddhyanigam433 3 года назад
Nitin Gudkari laughs After Building National Highway At 40km/Day 😂😂
@DoctorDoom619
@DoctorDoom619 3 года назад
We haven't achieved 40km per day yet. Buy we were somewhere in the 30s before Corona.
@DoctorDoom619
@DoctorDoom619 3 года назад
Achieving 40km per day is the target this year.
@saniddhyanigam433
@saniddhyanigam433 3 года назад
@@DoctorDoom619 NHAI achived it but just for 1 day they are preparing for achieving that target daily That will be achieved at the end of this year
@DoctorDoom619
@DoctorDoom619 3 года назад
@@saniddhyanigam433 yeah i know. They also built 25km in 18 hours. This year they'll consistently do 40 per day.
@chrisschoelzel3414
@chrisschoelzel3414 3 года назад
When you realize you live next to the widest highway in the entire world
@dusanlazic7970
@dusanlazic7970 3 года назад
Why am I watching this? I'm a survey engineer, I already know this lol
@user-st7qt2jg4f
@user-st7qt2jg4f 3 года назад
This is simply a great video. it's well explained and extremely vivid. Keep up the awesome job. Love you from Cambodia! Thanks.
@zodix44
@zodix44 3 года назад
In mumbai we just put tar on mud and call it a day
@amitsharda8198
@amitsharda8198 3 года назад
Lol
@woodenhorse9943
@woodenhorse9943 3 года назад
Also in Nepal bro...so sad
@rahulsakunde2753
@rahulsakunde2753 3 года назад
Not suprised that they ended this video by showing SOA ending scene Jax Teller 🖤💯 Amazing video gets an amazing ending...
@scorpionbradford
@scorpionbradford 3 года назад
I really enjoyed this learning process. Please make a video on structural engineering home, commercial bldg and bridge construction ! Thank you
@horvathlaszlo96
@horvathlaszlo96 3 года назад
Great video!! I'm in love with this channel!
@rekon3275
@rekon3275 3 года назад
Some countries be like: No, highways are old... We build the new design called bumpways
@ronisetiawan3728
@ronisetiawan3728 3 года назад
My country use the newest design called mudways
@rekon3275
@rekon3275 3 года назад
@@ronisetiawan3728 excellent
@davyjones8346
@davyjones8346 3 года назад
My country uses best design called seaways
@prabinacharya5351
@prabinacharya5351 3 года назад
Happy to see comments from all over the world
@arjungupta4288
@arjungupta4288 2 года назад
iam very glad to say that india made remarkable progress in highway construction in the last 10 years!! we are building world's longest expressway of nearly 1400kms from DELHI TO MUMBAI.. open to traffic in mid 2023! Thanks to our visionary transport minister NITIN GADKARI
@poststalone8503
@poststalone8503 3 года назад
Thanks for making them, I love so much driving down the road in my car, listening to music on the radio!
@horisontial
@horisontial 2 года назад
You should make a song about that!
@sarathchandra548
@sarathchandra548 3 года назад
Your channel always comes up with Interesting things ❤️
@DeepakSingh-hl3er
@DeepakSingh-hl3er 3 года назад
Indian highways are not built for generations. The flyovers fell during construction or just after inauguration & potholes start appearing after first rain.
@akshaypendyala
@akshaypendyala 3 года назад
I dont know where you live but, the highways i have travelled on are years old, and are in good shape! Maybe you should stop generalizing
@lantherpagdi
@lantherpagdi 3 года назад
Here in south india our infrastructure is world class
@stevenbanaan
@stevenbanaan 3 года назад
You should check out Dutch motorways, they are SOOOO comfortable to drive on, always high quality everywhere!
@aaajamesbond2995
@aaajamesbond2995 3 года назад
Nice video 👍... Keep up the great work !
@Interestingengineeringofficial
@Interestingengineeringofficial 3 года назад
Thanks for the support!
@RFGfotografie
@RFGfotografie 3 года назад
Seriously amazing video :P
@Aditya-zd1fy
@Aditya-zd1fy 3 года назад
This year in India a NHAI made a world record by laying 2.6km of concrete on a 4 lane highway in 24hours.
@sathvikpasumarthy
@sathvikpasumarthy 3 года назад
not 2.6 bro its 22.6
@Aditya-zd1fy
@Aditya-zd1fy 3 года назад
@@sathvikpasumarthyAsphalt road was constructed for 22.6 km record.
@Ayanda846
@Ayanda846 Год назад
The videos you make are so educational and very well explained... Engineering is the most amazing part of our lives
@andregustavo2086
@andregustavo2086 3 года назад
Could you pls make a video about neuromorphic computing? I would so like to know more about
@randomstuff5562
@randomstuff5562 3 года назад
In India on newer roads, recycled plastic is also being used which not only make roads of better quality and lasts longer but also cut prices up to half
@dm-wd6gh
@dm-wd6gh 3 года назад
So useful information from this channel. Well done staff.🇺🇲
@zohrehtajbakhshjou8517
@zohrehtajbakhshjou8517 3 года назад
wow, it was really great ... thanks
@philippatrick1042
@philippatrick1042 3 года назад
very informative. great video
@18.caothekhanh19
@18.caothekhanh19 Год назад
We really lack highways here in vietnam and we appreciate every highway built
@joandewinnaar4972
@joandewinnaar4972 3 года назад
Great video
@PacoOtis
@PacoOtis 3 года назад
Well done!
@viniciuscosta3571
@viniciuscosta3571 3 года назад
Bidding in Brazil is just about best price. Incredible.
@rh5301
@rh5301 3 года назад
this is my everyday life !!! love it totally !!!!
@polecya
@polecya 3 года назад
RIP forestry, air quality, native wildlife with each new highway monstrosity built
@sathvikpasumarthy
@sathvikpasumarthy 3 года назад
Actually roads are built in such a way that the net carbon emission gets reduced and few places like India they are building elevated roads to save the wildlife and plants are replanted in other areas
@S1YAM
@S1YAM 3 года назад
do you still get around by riding horses through the jungle and forest?
@Tradingpassion
@Tradingpassion 3 года назад
That's why I subscribed this Channel.👍
@yalamandarao6327
@yalamandarao6327 3 года назад
Y only 46k views and 266k subscribers?? This channel is so underrated. One of the best engineering channels. Must subscribe this.
@davyjones8346
@davyjones8346 3 года назад
*India* : The best i can offer is 2 lanes
@fredrickrari9338
@fredrickrari9338 3 года назад
Would love a step by step process of how a highway comes into being From an idea to a finnished process
@kabali0079
@kabali0079 3 года назад
World's best RU-vid channel
@prakashgupta2477
@prakashgupta2477 3 года назад
Plz continue making this type of video
@bobinmondal7527
@bobinmondal7527 3 года назад
These*
@MrZubin007
@MrZubin007 3 года назад
I did not learn Civil engineering but I appreciate the content
@ibrahimalowonle9106
@ibrahimalowonle9106 3 года назад
Can we all just give a big thanks to the people that build are roads and highways
@infraprojects3751
@infraprojects3751 3 года назад
ru-vid.com/show-UCSiaHKyoxSyoc8Rzb2thXJA
@ibrahimalowonle9106
@ibrahimalowonle9106 3 года назад
@@infraprojects3751 Good job
@Kevin-fj5oe
@Kevin-fj5oe 3 года назад
Apparently, RU-vid knows that I'm designing a road for assignments
@MrTripleXXX
@MrTripleXXX 2 года назад
They must take an incredibly long time. I have new roads built around my area that are still just dirt roads being built into actual roads. I've lived here for about 9 months. They do make progress it's just really slow.
@Turkeybaggss
@Turkeybaggss 2 года назад
They work fast where they choose to work fast at
@killernat1234
@killernat1234 3 года назад
Asphalt is better for roads because it’s far easier to recycle, it never sets, also the pan American highway will never be completed, due to a dense rainforest in Colombia and Venezuela
@gargus777
@gargus777 3 года назад
In the Philippines our highways are always brand new
@timbowalk14
@timbowalk14 3 года назад
5:29 Holy crap I did not know this. I live close to this freeway. Always has some sort of traffic on it but it's continuous.
@lefthandedhardright8839
@lefthandedhardright8839 3 года назад
Rubberized asphalt in PHoenix make the roads super smooth and quiet.
@vivekmanchikalapudi9947
@vivekmanchikalapudi9947 2 года назад
I'm a Masters student in Transportation Engineering and I just loved the video
@Chris_at_Home
@Chris_at_Home 3 года назад
This summer they are making 2 lanes into a 4 lane divided highway with turn lanes and frontage roads a few miles from here.I remember when there was hardly any traffic on that road.
@yohd3rd212
@yohd3rd212 3 года назад
You forgot about road markings before opening to the public.
@kunalshah35
@kunalshah35 3 года назад
Well in my country road are made in one day and destroyed another day
@Thillith
@Thillith 3 года назад
G4 Beijing-Hong Kong-Macau Expressway has 50 lanes at one point. Yes, 50. Next to a toll ramps. If that counts that is, it's still part of the highway thou
@ahmedalmoaber8952
@ahmedalmoaber8952 2 года назад
Thank you
@BimoSaputro1
@BimoSaputro1 3 года назад
Indonesia : 6 year constructed highway/tolls destroyed by rain 😄😄
@felixdatche9278
@felixdatche9278 3 года назад
Generally, both materials from Asphalt and cement...the difference is just in the binding material... Interesting information.
@yorokobikanaa
@yorokobikanaa 3 года назад
people in my country just put concrete blocks and boom jobs done
@Amitdas-gk2it
@Amitdas-gk2it 3 года назад
Nice ☺️
@flankey3618
@flankey3618 Год назад
bro really forgot the pipe laying
@stevealsien9165
@stevealsien9165 3 года назад
The process is same here in India too
@vigneshatthi2647
@vigneshatthi2647 3 года назад
Ur name doesn't look Indian. Maybe you're born accidentally for a british?
@arbabcreations
@arbabcreations 3 года назад
What are the machines used at 3:31, 3:35 & 3:36??
@balintpuddle
@balintpuddle 3 года назад
Does someone know what is this program called in 1:32?
@alienlatino2945
@alienlatino2945 3 года назад
In my country (El Salvador) they were going to build a highway and were deciding if to use asphalt or concrete. Lifetime of the asphalt was 10 years, of concrete was 30. They went with concrete. It only lasted 6 years before the road was in a mess, broken, potholes, uneven, slabs broken in half. I don't know if to save (and steal money) they didn't add the appropriate ingredients to the concrete or what but it was a disaster. What a waste of national tax dollars.
@uranusneptun5239
@uranusneptun5239 3 года назад
Isn't the Autobahn more like a freeway and not a highway?
@hateforgascazurli7928
@hateforgascazurli7928 2 года назад
Romania: we don't do that here
@iminsideyourwalls9432
@iminsideyourwalls9432 Год назад
So fucking true. Less material is used than in the project because they save money from this.
@dustinsmith8093
@dustinsmith8093 Год назад
The last step needs to be building them so they don't fall back apart
@nordhafen3043
@nordhafen3043 3 года назад
Laos has built a new highway, which is quite nice in Southeast Asia and South Asia.
@chicku975
@chicku975 3 года назад
Awesome
@joshpawz1470
@joshpawz1470 2 года назад
Bruh the SOA clip at the end. 😂
@Bruno-sm8eo
@Bruno-sm8eo 3 года назад
Lool! The Clip of the Autobahn in the beginning of the vid shows right where I live. I take the train you can see their like every day (if it wasnt for Corona)
@dcbikes957
@dcbikes957 3 года назад
Kurz vorm Elbtunnel ausfahrt othmarschen
@thatwazfunaz
@thatwazfunaz 3 года назад
they didn't do any of this when the Gunbarrel highway was built. 1350km of isolated desert track with heavy corrugations, sand, rock and floodplains.
@minhson65
@minhson65 3 года назад
I've never seen a concrete highway in my life but I do see concrete roads in the country
@jahmalstarrk1016
@jahmalstarrk1016 3 года назад
Really wanna do this but don't really know where to go
@brandonsmith546
@brandonsmith546 3 года назад
In India we don't think about future,we just reduce the size of already small ones into much smaller ones .
@technodestination4763
@technodestination4763 3 года назад
We are not World Class in planning- Agreed But looking around your area you might find We are investing heavily in Highway Infra
@parthlm1073
@parthlm1073 3 года назад
Hmm thats why india is building 23 new expressways by 2025 and constructing 2 lane 30 kms of new highways every fucking day and existing roads :)
@TonyStark-ky2mt
@TonyStark-ky2mt 3 года назад
Lol
@brandonsmith546
@brandonsmith546 3 года назад
@@parthlm1073 I'm talking about my place ,not about some random highways in the north.
@brandonsmith546
@brandonsmith546 3 года назад
@@technodestination4763 I'm talking about my place ,not about random highways in the north.in my State Government reduced the size of the road during re taring citing lack of land.india is a congested and over crowded country,we can't expect good roads everywhere.
@marshaldteach2054
@marshaldteach2054 3 года назад
I found this channel by accident. Best accident ever..😁
@Twiggy163
@Twiggy163 3 года назад
"complex digital pointcloud" Ahw thanks but it's not that complicated. All it represents are XYZ coordinates (more dots = more accurate but also slows down the PC) to make a digital surface model. A few clicks and software like Civil 3D (also shown in the video) sorts it all out. Besides a nice 3d model of the design, its helpful to calculate the amount of soil that will be displaced and it allows engineers to design a road in such a way that we minimize soil displacement to save money.
@yogeshkumbam
@yogeshkumbam 3 года назад
"planning for the future" , *india has left the chat*
@vijenderthakur5715
@vijenderthakur5715 3 года назад
Nitin Gadkari entered the chat 😎
@bharatkini2083
@bharatkini2083 3 года назад
Namo created the chat group 😎
@joyid
@joyid 3 года назад
Duh, do better research of your country pal.
@manot8273
@manot8273 3 года назад
That was 10 years ago bro!!!!!
@lantherpagdi
@lantherpagdi 3 года назад
are you living under a rock?
@d-6tejaskharde762
@d-6tejaskharde762 2 года назад
After seeing this I think many steps was skipped in India while making roads
@paulapana6241
@paulapana6241 3 года назад
I don't know bout you but I love asphalt roads more than concretes. It's the black aesthetic for me
@taskov87
@taskov87 3 года назад
In Bulgaria we make highway more than 49 years
@lilpump9507
@lilpump9507 2 года назад
The Katy Fwy is the widest yet traffic is still a massive headache 😂
@ryanhawley7113
@ryanhawley7113 3 года назад
Where is that road at 5:49?
@hindsight8041
@hindsight8041 3 года назад
Think the workers in my hometown miss all those steps..
@khiladikumar491
@khiladikumar491 2 года назад
lovely
@zelinka753
@zelinka753 3 года назад
especially in slovakia :D 500 km in 30 years and stiil not finish :D
@alejandroerazobolanos4576
@alejandroerazobolanos4576 3 года назад
"Canada, the US and 12 nations in Sotuh America" THAS IS WRONG!!! SOUTH AMERCIA STARTS IN COLOMBIA, NOT MEXICO. The Pan-American Highway crosses only 5 South American countries: Colombia, Ecuador, Perú, Chile and Argentina.
@manjensen1710
@manjensen1710 3 года назад
Yep, and the reason for the interruption at the Pan-american highway is the Darién gap, nobody will build there.
@slavikmishcheriakov2832
@slavikmishcheriakov2832 3 года назад
yep. It should be translated from so USian "US, Canada and barbarian countries" to "X North American countries and Y South American countries"
@tejasgaikwad9971
@tejasgaikwad9971 3 года назад
Indian Highway makers- Ooh what's that?? We dont do that here!!! We We make record for fastest construction of highway and It also gets worse as soon as it is built
@prakashjha6388
@prakashjha6388 3 года назад
India's DFC uses concrete....
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