Why did the entire bridge collapse in Baltimore when it was hit by a container ship?
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- Опубликовано: 8 май 2024
- After the collapse of the Key Bridge in Baltimore, many are wondering how the entire structure came down. Engineers say it’s mainly due to the bridge type-Truss.
In Truss bridges, there are no cable supports. All of the structure you see above the deck is designed to transfer the load to the eventual supports or piers that head underwater and into foundations.
When you take down one of those piers, the shape changes and the force of the crash is attempting to span twice as far in order to reach the next pier.
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Correct, it is not a suspension bridge.
Duhhhhhh
And it took these experts to figure that out. I wish that I went to college. NOT
@@tired7140 Why did I even get my civil engineering degree.
@@Azure_Fire If your as smart as these guys get your money back. If not then your doing alright.
Because it was hit by a massive ship
Remind me the nex time mi6 n cia are in Crimea 🙄
Not very many people know anything about structures of any type, much less that of many types of bridges. Sometimes a detailed explanation is warranted.
Yeah well you didn't get one. Look it up yourself. How to protect bridges from impacts in the water. There is a very clear and easy way to protect them and none of that was discussed here.
@SVW1976 Actually, you are correct in the assumption that many of us do not get all the information. But, there are some of those who gleen their information or news from varied sources. Maybe from past or present personal professional experience. Take care and stay safe.
Baltimore failed to protect this dated bridge with proper protections. This isn't difficult to understand.
Thats what engineers said it was not properly maintained.
Who cares about the falling bridge, they should report how the ship ended up hitting the bridge.
Once the investigation happens and that information is known, I'm sure they will. Right now, initial signs point to a power failure on board the ship.
I agree
They said mayday we have lost power, got power in the nick of time but it wasn’t enough time to steer the engine in the right direction therefore hitting the barrier and causing the bridge to collapse
why did the ship change course so drastically after losing power? the water currents are not that strong to move 100,000 pound barge
@@thanosianthemadtitanic you be surprise what water current can do
Prayers to the 6 people on the bridge at the time of this collapse.
100,000+ ton ship. Size and weight of the USS Nimitz aircraft carrier.
That whole truss structure probably weighed less than 1/2 of that.
No bridge is designed to withstand a 100,000+ ton ship moving at 8 knots.
What does Nimitz and his 200,000 have to do with it!? Where can I get money for a new bridge!??? You can, of course, ruin a shipping company that recruited captains from India to work! The captain probably thought driving a huge container ship was like driving a truck!!! Ha ha ha!
@@Mark59396 Maryland local pilot operate ship in sea area not captain
No cable stays wound have saved this from happening...
No bridges could have survived it ..
it's not a matter of the bridge surviving, it's could anything structurally have lessened the impact. Given other bridges that have many more layers of support, it's worth looking into this a little more considering six people were killed.
@@christerry1773 believe me this accident will be studied inside and out .
The bottom line is 92 tons of ship could not have been stopped in two minutes nor could any bridge have taken a hit like that and stood up to it..
@@michaelhaney4314 The side of the bow did hit pillar first and then pier did stop boat. You believe the new bridge in Florida does have protection for fun? In 1980 another ship did "chip" pillar of Key bridge, absurd.
Did you see the size of that ship? The ship and it's owners are at fault and liable. It's not as if a bridge can get out of the way.
I don't know exactly how it happened but they lost power twice before they hit the bridge. They lost all means to steer the ship. They even tried to drop the anchor. Plus, it's policy to get a local captain who knows the waters and area to steer the ships out of town. I don't blame those on board at all until they find out WHY the power failed but sometimes, terrible things happen.
It's the fact there are structural elements that could have lessened the collapse, perhaps to a minute or less. Given that's six people were killed that's not an unreasonable question. The entire left and center collapsed the moment of impact. Look at the Skyway bridge in Tampa.
It's not it's. It's its.
100,000+ ton ship. Size and weight of the USS Nimitz aircraft carrier.
That whole truss structure probably weighed less than 1/2 of that.
No bridge is designed to withstand a 100,000+ ton ship moving at 8 knots.
@@lisachapman2980Exactly. They were dead in the water. They may have reversed for a bit when power came back for a very short time but it was too late. People don't understand you can't stop something that heavy on a dime. Accidents do happen. Sometimes big ones. However the crew did a lot right like you stated. They sent a mayday and police were able to stop traffic with what looked like no more than 30 seconds to collapse from the video. It could have been much worse.
Considering that’s it’s not a cable stayed or suspension bridge it’s not a big shocker that there’s no cables. Do some actual reporting instead of hopping on the trauma train
Agreed. One of the dumbest comments I've seen on this, and there have been plenty.
Some people are saying it was a government operation. Explaining to common Americans (just look where we place globally in education) is useful in this case.
What in the world is the point of this comment? First there’s the vapidness of its contents, which makes the video look like an original Da Vinci, but on top of that, by commenting, you’re helping to boost the video.
I could imagine that being an acceptable sacrifice for you if you actually had something to say...
@@VeritableSmorgasbordyet you are here as well 😂😂 I don’t care if the video gets views? I hope people see this dumb reporting. It’s to put these mindless journalists on notice
My brain hurts after that explanation
From so called experts. Sheeesh
Well, don't forget that there's always barber college...
seeing all the "how does this fail from 1 pier being damaged" posts just makes me so sad for the state of our education system. We have more access to information at our fingertips than ever before in the history of humanity and no one knows how to properly use it.. we did more in the 60's and the 70's with so much less!
I can't believe removing a critical part of the foundation of a structure causes it to fail.
Everyone knows engineering relies on magic.
But what was the original route supposed to be before the ship lost power? From this video it looks like it wouldn’t have fit under the bridge, but I saw an article saying there would have been plenty of room if it had been able to go in the channel under the right part of the bridge
It became unbalanced. As one structure, it's strong. Take one of the MAIN supports away and it falls. Take the support away with lateral force, and it will completely destroy itself.
I'm not sure you could find any bridge that would stay standing after being hit by a fully loaded container ship at 8mph.
Why did ukrainian boat captain go full speed into it tho , it happened at 2 am by 8am president said taxpayers would pay for entire thing , it's just odd
@jrocks6969 , if the government doesn't foot the bill it would be years before anything was worked out. Maritime law is complicated and convoluted.
@@chrisfoxwell4128 they said it would take 5 years to clean up anyways the underwater concrete has to be pulled outta ground
@@jrocks6969 Stop the disinfo
@@meatrealwishes do u want the ukrainian boat captains name
This is why in Hampton Roads, there aren't any bridges of that nature along the James and Elizabeth Rivers or Chesapeake Bay until you get past the Navy. The bridges and tunnels are probably too expensive and unnecessary in that area. Something like this can keep them from getting in or out.
I love how everyone who can’t even do a simple math problem suddenly becomes a preeminent engineering expert.
The plebs who riveted these bridges together knew more about “””engineering””” than any modern engineer could ever hope to by the time they die…. Think harder
Well, of course. The very big difference between the collapse of a truss bridge when one of it key supports is knocked and that of a cable span bridge when one of it's supports is knocked out is that they both fall down and go boom.
So far no accurate time line exists that shows when the ship exited the channel it was meant to be in to pass the bridge unharmed. Once you establish that you can investigate how those steering spent the remaining minutes until impact.
News flash. It collapsed because it was hit by a bloody big ship.
Something fishy about this so-called accident, every ship /boat has emergency steering, what was the captain and Pilot doing, first time they said they lost power why? didn't they drop both anchors (they only dropped one just before it hit) and why should the American tax payers pay for a new bridge when the shipping company insurance should pay (typical Biden BS)
This bridge is truss with continuous section , and also the load is distributed with vertical suspenders( Stressed bars) .
Generally these vertical suspenders are designed to carry vertical or very minimal transverse load( depending upon its type or fixing technique) .
As the Ship hit exactly on the pier from where load transfers to the ground , it shattered the complete bridge .
Was the Key bridge especially long for a Through Truss?
@@B.cest-la-vie Not Exactly , truss spans can be even longer .But the problem here was the bridge type , had been cable stayed or extradozed cable bridge or even a regular truss bridge with vertical columns , this could have been a localized damaged which could have been repaired ..
Hope that we get the new bridge standing as per latest tech .
Thanks for the comments
Thanks for answering. What do you mean by regular truss...no arch?
@@B.cest-la-vie Straight Section of truss with sorter span lengths .I understand due to port requirements , it might be a requirement to have spans navigational , in that case I would suggest to have a cable stayed Bridge 🌉 .
Fully laden container had more weight & velocity providing greater lateral force to overcome the bridge downward force from its weight... The bridge is assembled based on "weight balance and transfer".
Its not the Bridges Fault!! Also Ships dont Drive into Bridges Regularly like cars. In other Words Blame the Shipping Company
not true look up other old bridges and see what theyre governor have put in place, underwater pillars to protect from rouge ships.
@@ThunderDivine Hey dumb shit its the Shipping companys fault. Now go f@#! Your mom
@@ThunderDivinethats the bridge used to transport all military weapons that funded a recent War dip shit🤣🤣🤣
Bridge was fine since 1977. Government failed to build dolphins to protect the piers
Notice how the sheep media does not pursue that story about how Baltimore made a decision due to cost to not beef up pier protection on that bridge?
Why was the ships course so close to the support in the first place? Is the channel right next to the bridge support and not right down the middle in between the 2 supports?
You can't make a truss bridge into a suspension bridge. Since you're in San Diego, take a look at the Coronado. Where would you put the cables? Not possible. It might have been possible to protect those flimsy piers with concrete that is not kinetic.
Now I'm not an engineer....but I'm gonna say that in engineering terms. "It got hit by a f***ing ship!" I don't think you can blame engineering whatsoever, even if a few bolts were rusted or whatever. The truss style is the design of this type of bridge, it's supported.....by supports, take out a support and oh no!. Try driving a car meant for 4 wheels with 3, see how it works out. That's like the world trade centers being like, "didn't know a Boeing was gonna fly into it"
Why no safety pilings to prevent any contact from ships in place when ships of that size are passing by such a critical structural support??
Water flow displacement if you want a Large Vertical structure in Series of Posts. Maybe a Floating Collar design like has never been tried would do the Task.
There hasn’t been a Coast Guard/NTSB investigation yet. Why don’t we wait for their analysis before we start thinking we known what happened.
I prefer to draw my own conclusions from the available evidence while we wait.
When the report comes out in like 2 years, nobody would remember this event and it's no longer newsworthy.
Animation could have been better, but this was verbally described accurately. In all fairness, a cable type suspension bridge would have also collapsed. A cable-stayed bridge would have been as equally catastrophic as not only are the cables in tension but the road bedding support structure is in compression.
Should have tugs take it out of port. Stupid to try to steer a ship that big in close quarters.
Tugs did take it out of the port.
As per normal tugs return once the ship is under way.
What could a tug do anyway once a 100,000 tonnes is moving at 8 knots? Nothing is the answer.
Ok captain crunch
I read comments that the ship had been experiencing power outages even before it departed. Does anyone know if this has been verified?
Maybe, than the technology then already was accepted. Not sure whether all others has same weakness
You forgot to mention that also another 900 feet long section of the northern bridge causeway collapsed. It was not held by the steel truss, it was not hit by the ship. rather it was built on massive concrete pillars. Those are totally obliterated. How is this possible? Asking for a friend.
Secondly there are no solid mounts on the bottom of the bridge-to pier pedestal seats, it’s made to move with limits of moving so it was not ridge, just like over passes are not anchored to the ends of the things, they are just sitting on dirt mound’s, with a pier pylon upright in the middle, so they cam move during earthquakes and wind out here in California thanks BigAl California
Looks like the piers were not as big as should have been and what were the construction crew working on.
The 4 demolition charges on the tops of the archs of the girders helped
Well now we can say this kind of design falls in less secure category and should be avoided.
Im never going back to San Francisco.
Is that where you got that rash and bite marks on the back of your neck?
Don't come back to California. Too crowded.
Amen to that!!100
That bridge was a menace .
NOPE the bridge had zero incidents for ~50-years, with thousands of ships going under it.
It was one poorly maintained ship that was the menace.
@@DennisMerwood-xk8wp BS, a ship did "chip" pillar of Key bridge in 1980. In Florida a bridge was destroyed in 1980 as well. New bridge did get protection, Key bridge just 2 small dolphins too far away.
But USA did not mind when civlians die, just luck officers stopped traffic in time.
@@bfa-xi1py "But USA did not mind when civilians die" - What bovine excrement"
Take your xenophobic phobia's somewhere else please.
Wrong question. The right question to ask was, why did the ship turned right into the bridge support when it lost its power?
There's more than one question. Other bridges of different designs have been hit by large ships, and only lost the section right next to the support.
Look at the collapse of Sunshine Skyway Bridge or the Tasman Bridge when they were hit by large ships. Different designs, different results. Only the sections next to the struck pillar collapsed, it didn't spread further.
This bridge was built when cargo ships were a lot smaller. I doubt the bridge that replaces it will use the same design.
It was lucky that it happens at night when traffic was low...
I realized where Grandpa Biden spent taxpayers' money! They didn't go to new bridges in Baltimore, not to new railroads!!! They went to war in Ukraine, where they were stolen. Jovelins are sold on the black market!! That's the whole secret! Don't dig a hole for someone else, you'll end up in it yourself!!!
It was lucky that there was bridge maint going on and there were traffic control cops already in place at each end of the bridge.
@@stargazer7644 I realized where Grandpa Biden spent taxpayers' money! They didn't go to new bridges in Baltimore, not to new railroads!!! They went to war in Ukraine, where they were stolen. Jovelins are sold on the black market!! That's the whole secret! Don't dig a hole for someone else, you'll end up in it yourself!!!
Are they rebuilding it right now
You should be asking, Why did the ship hit the bridge?
Information is not the same as knowledge. All amateur ship drivers, engineers, and other couch experts should wait for an explanation from the folks who understand such things before opining on the reason for the collapse.
The ship has a dead weight of 117,000 tons.
The entire bridge didn’t collapse. Just the middle of it.
Not sure any Navy ships station there. Very vulnerable..
Its a ship tf you think. Even with support it will still fall
Statics 101!
When statics meet dynamics
@@Left-BlankDamnit. I was going to use that. Now I have to make some reference to Isaac Newton that no one will get.
Nightmares about free body diagrams...
Can you say the foundation was compromised!
The entire bridge didn't collapse. Looks like the entire overhead steel structure of it collapsed.
The bridge is 9,000 feet long. 1,600 feet of it collapsed.
They thought a design in China was a good Idea
By law there's to be a trooper on site,on any state hwy construction. Where was the trooper at.
Instead of getting info from San Diego, try WBAL.
The bridge collapsed because it wasn't designed to take a direct hit from a cargo ship, even though it straddles the cargo lane.
No bridge is designed to take a hit from a 161,000 ton container carrier. The ship weighs far more than the entire bridge does.
@@stargazer7644 Yes, but other bridges are better protected.
It wasn't designed to take a direct hit from a type of ship that didn't exist on the planet when it was built.
@@stargazer7644 That's a good point.
Interesting observation.
The media machine is already hard at work directing people’s attention from the ship and to the bridge.
I am sure NTSB report will not find the shipping company at fault and their insurance will not need to cover the repairs. US tax payers will pay for the cleanup and bridge replacement.
What kind of question is “why did the bridge collapse “? Maybe because it’s man made and was hit by a huge ship…. And nothing is permanent anyway… lots of people here don’t understand the basic laws of thermodynamics …
But diamonds are forever!
It's a sort of LEGO bridge.
Something wrong with the direction ship was traveling...plenty of room in middle...what happened??
The ship blacked out and lost all electrical power multiple times.
@@stargazer7644 Thank you!
A horrible and devastating disaster waiting to happen. And, it did. Diane
because the bridge was not designed to be hit large ship. ships that large were very few a that time and not planned for
And no one has ever seen a big ship in all those decades?
what i fdind interesting is how the gov immediatly said itll be rebuilt... sure it will
All those "elected officials" immediately grabbed the opportunity switching into campaign mode and started saying things to pump up people's adrenaline. They are super good at that. That's why they got elected. Other than that, it's everybody's guess.
After the Sunshine bridge near Tampa tragedy,the replacement bridge had concrete"dolphins" installed protecting main supports from accident...or sabatage. This tragedy has brought about conspiracy theorys,many of which have come true in recent years....blaming those "3 letter' agencies....from JFK 'till now.
Of course they hit the one bridge without any protetion. And folks always mocked me for keeping lifevests in my truck. You can never be too prepared.
165,000 tons, object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force. Newton's First Law
China engineers are laughing on their floors holding their stomach..
Single point failure seems a poor choice of design. Lowest Bidder. I always think of that when traveling....Yikes. IMHO , I suggest not worrying about myriad possibilities of ship failures. Install protective structures (dolphins) to mitigate these likely impacts. These are not uncommon impacts. Mitigate.
Designers do not bid their work in the USA. No such thing as a low bidder in Design Awards.
Ok, so the bridge was old and out of date? So it could survive a pier impact? No cables?
It's a truss bridge, not a suspension bridge, so no cables. Wouldn't have mattered if it was brand new, the bridge cannot stand once one of It's load bearing members has been obliterated. Do a Google search for bridges struck by ships/barges...
Cables? It's a truss bridge. What are you talking about?
Well, what supports the cables? Duhh
Well, what supports the cables? duhh
But nothing on the captain or the ship? Weird
You were expecting this one short clip to cover _every_ single aspect of the incident? Or just never mention any other aspect other than the captain and the ship (which they have very little information about).
So who planned this?
musta been Boeing
@@christerry1773So Close. Beijing.
Supposedly the cargo ships power went off. Riddle me this how did it manage to make it last second turn and Ravitz engines so smoke was coming out of its stacks at an increased rate.
Backup generators coming on too late to make a difference.
you're point being?
@@RainbowLayer92 😂😂😂
@@RainbowLayer92 anchor ⚓️
@@gophukyurselvs3621 you just want it to be on purpose because that would prove that the world is being intentionally destroyed by powers out of your control, therefore, you won't have to engage in long-term planning and execution of the things that would make your life better since it will be sabotaged by evil people anyway.
Why is the media covering this like engineering could have prevented this?
It got wrecked by a big ass ship. Nothing but the ship and its crew could have prevented this. The end.
Of course kid, new bridge in Florida did get protection, but Key bridge just 2 dolphins too far away. USA was just waiting for accident to blame others. In a fair court tan insurance company will only have to pay small amount of money, but USA and fair courts?
@@bfa-xi1py what in the name of Chi Com Spyware AI are you babbling about?
@@AdamWild572 Of course kid, you must be a US person in ignore mode.
What go up must come down its gravity effect 😅
My socks I ordered are probably still there.
I haven't received them..
Gravity
Not to worry folks Mrs buttigug is on it
MANDATORY: tugboat escort in case of power lost when bridge crossing.
A tugboat would not have been able to significantly alter this ship's course at 8 knots. Tugboats are designed to manage boats that are nearly stationary.
@@stargazer7644 Its amazing how few folk understand that eh! Thanks
How?? It was intentional
Unless there's no choice or no land to divert a road passage, never ever build a long bridge over water. A road diversion though a little bit longer and more time consuming to travel would be a safer choice for eternity. A slight earthquake, a ship or any man made disaster like a trucker explosion would easily collapse this flimsy bridge as well.
what was the point of this video???
Its time to become a pasport king
Who is wondering why it all came down? Not me...common sense
It was dropped look at the red flashing on top of bridge
Those are construction vehicles lighting & bridge lighting
And it has an aircraft warning beacon on top. That’s your red flashing light.
Looks like it was *planned*
Looks like another failure of the public education system.
As i understand it, the carrier or the ship owner were covered by insurance.
Lloyd's of London a consortium of insuance underwriters believes this claim may exceed 4 Billion US$. Will the US govt be re-imbersed for the replacement bridge?, If so what is all the discord in congress about?
Discord in Congress is mostly point scoring and political theater.
The ship was 95,000 tons ...
And that is its unladen weight!!!
Full of cheap Chinese crap.
Never understood why folks always wait until catastrophes happen before they realize they are complete idiots. Folks hate being proactive. They definitely knew there were risks involved when they built the bridge. They had over 4 decades to address the risks they were aware of but instead waited until something like this happens. Now they are going to try to fix it now that it’s too late.
I hate this kind of auto gen content. The bridge was rammed by a ship the size of a Nimitz Class Aircraft Carrier. There is no bridge in the world that could take that kind of hit.
The bridge was outdated
How does a ship that size change direction from power loss? It simply doesn't!
Why didn't they use tugboats through the bridge?
No port uses tugboats once the ship is free of the dock. It moves under its own power
Exactly. It lost power. That's exactly what tugboats are for. Same thing happened with this ship 2 months ago down in Chile. Horrible regulations in the shipping industry
duh. take out any foundation and it will fall, cable truss precast or whatever. I think I would be embarrassed to read a script like that.
The entire bridge did not collapse. 3 truss spans and 3 girder spans collapsed. The remaining 31 spans are still standing.
No, only the important part collapsed, you know, the parts with people driving on them.🙈
For all the special ed elementary students out there .
This explanation is the most ridicules thing I have heard so far. The bridge is a cantilevered arch truss bridge. Nearly all of the weight of the cantilevered arch truss is supported by two columns underneath it. The roadway under the crown of the arch truss is supported by cables.
That entire bridge collapsed but the ship stayed afloat and didnt sink?? And the owner of the chinese cargo ship was murdered a few months ago. Totally intentional. Not coincidence.
_the entire structure didn’t come down though…_
the entire bridge did, yes. If you're referring to the ramp, that's an entirely different thing.
@@christerry1773 The entire center truss structure came down. The bridge was 9000 feet long, the truss part was only 1600 feet of that. Most of the bridge is indeed still standing.
@@stargazer7644 did u even read my comment?
@@christerry1773Yes I read it, and that's why I'm correcting it. The entire bridge did not come down.
@@stargazer7644 lol yes master. I’m so dumb and thankful to have people like you to correct me.
Ahhh, all of you armchair Monday morning Skipper captains. You all know so much, an unbelievable amount actually, pertaining to everything involved in this fiasco. Stunning. Here is how much you know. 0.