New Baltimore Key Bridge Design Replacing Collapsed Bridge
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- Опубликовано: 6 май 2024
- Jeff Ostoff shows you the latest updates on the engineering disaster aftermath of the MV Dali ship striking the Francis Scott Key Bridge causing the bridge collapse in Baltimore, Md. on the Patapsco River. The video also shows some design concepts for the new Key Bridge to replace the old Francis Scott Key Bridge. You'll also see the incredible new massive underwater hydraulic claw in operation, dredging up massive sections of bridge debris of the now re-closed channel. They closed this limited access channel on April 29, 2024, after the first ships to pass through the new limited access channel, a deepwater 300 ft wide, and a 35-foot deep access channel for larger ships, the first time since the MV Dali collided with the Francis Scott Key Bridge in Baltimore, MD on March 26, 2024. You'll see progress so far in this Baltimore bridge collapse.
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They barge the bridge collapsed bridge debris to the new 10-acre laydown yard used by the U.S. Army Corps of Engineers to process wreckage from the Francis Scott Key Bridge site. An estimated 50,000 tons of concrete and steel collapsed; once removed, the wreckage is sorted and transported two miles away by barge to Sparrows Point. Debris and wreckage removal is ongoing in support of a top priority to safely and efficiently open the Fort McHenry channel. 
Хобби
Breaking news of the day is that the last worker was recovered.
When we're the last 2 found? Are they being deliberately quiet about this.
@davidwilliams1086 there were news reports the last few days.
Yes, as mentioned in the video.
@@davidwilliams1086What? Has only been one missing for over a week now....which they just found. They haven't been quiet about any of it.
RIP
My friend works for the Maryland State Police with the underwater recovery dive team. He pulled most of the bodies out of the Key Bridge catastrophe. He is an expectational individual who is dedicated to his service.
Please remember to keep the people and the families of those lost in this disaster in your prayers, if you subscribe yourself to prayer. If not, thank your fellow police officers for doing the work that no one else is able or willing to do
❤ God bless all of those who have been putting themselves in harms way to recover all of those lost in the bridge collapse , and the workers who are doing dangerous cleanup. My prayers go out to the families and friends.
I’m not trying to be a jerk, but there’s many difficult jobs beyond police. Lots of men bust their butts 10-12 hours a day in roofing, construction, tree work, concrete, masonry, etc. These men NEVER get “thank-you’s” from people, and many work WAY harder than cops. There are lots of thankless jobs.
my prayers r with each family member.To your friend a thank you from India.
Exceptional, not expectational.
@@shimmeringchimps3842damn autocorrect, you're right! Didn't notice it til now!
they used a diamond wire saw to cut the bridge support. The drive unit can be seen on the deck of the Dali in that image, right above the concrete slury marks on the hull. Its the baby blue colored box with the black tire and grey spools on the side.
They used a similar process to cut the Diamond Ray shipwreck apart, but in that case they used a diamond coated chain as a hack saw, with 2 cranes as the power source.
Came here to say this. Thanks.
Sharp eyes.
I was gonna say the same thing
I was gonna say the same thing
2:46 This picture reminds of Sunshine Skyway Bridge that was replaced by the old bridge that was hit and damaged in 1980.
It seems to be a really popular style, both in the recent past and now. I like the look, though I suspect that people are starting to find it too ordinary, and no longer distinctive.
@@markiangooleyyes the Veteran’s Memorial Skyway in Toledo, Oh (in which is currently the largest bridge in Ohio right now) has the same exact design also
"Sunshine Skyway Bridge that was replaced BY the old bridge"? WTF? That sounds like you're saying the old bridge replaced the new one, which doesn't make sense. Sunshine Skyway Bridge that replaced the old bridge, _which_ was hit and damaged in 1980. No "by".
The Skyway bridge seems like an older design because so many bridges are built that way. It is a superior design and I hope it will be at least 200 ft above water like the Tampa bridge is.
@@robbrown3519the Sunshine Skyway was one of the first cable stayed bridges in the USA, as I understand it. I think the clearance is 190 ft above water.
That style has since become very popular.
Inspiring. WeBuild Group threw down the gauntlet with this design. I'm sure other design teams are in the same process, but being "first in" sets the level that has to be met. Good strategy.
why not hire a US company to build our bridge. made in the USA
@@TheJoedirt6000 I'm with you, but I think most firms capable of this kind of job are international.
Not really, just looks like bland bridge 12.
To be frankly honest, the aesthetics of the cable stayed bridge is their main selling point. They are extremely difficult to maintain & make changes to once they are completed.
@@malcolm20091000 They will use lots of American workers for a large project like this. Like building a dam.
1:52 the machine responsible for the cut is right there in view! A diamond wire cutting saw.
Yup, that's what I figured. Only ever seen them on shows where they're cutting large granite slabs, but safer and easier that anything else for that cut.
Couldn’t they use an industrial water jet?
Dont think its wire, the cut face is too curved like a water jet cut it.
The white stuff on the side of the Dali is washed off concrete slurry
There is no discoloration in the metal . My guess is a water jet .
@@hotchihuahua1546 🤦♂🤦♂🤦♂🤦♂
BTW: Minorcan Mullet has reported the body of 6th and final lost worker has been recovered.
Yes it was announced 3 hours ago by press release at 5 pm, I mentioned it in this video
Did you even watch this video?
@@westsparks6844 Clearly he did NOT
Amen.
This new bridge design looks a lot like the new International Gateway Bridge in Long Beach, CA that replaced the old Gerald Desmond bridge. It is a gateway from Long Beach Harbor into the docks for the container ships. Took years to build but was an awesome sight to watch it go up.
2 of the most recent cable stayed bridge jobs in the US -- both look nice - but took 7 years to build .... The NEW GD bridge in Long Beach main span is only 1000' -- which is even less than the old Key Bridge 1200' span. The new Gordie Howe Bridge b/w US and Canada-- span wise is more similar to what they need to replace the Key Bridge with a cablle stayed bridge. The Tappan Zee bridge job was the fastest large US cable stayed bridge built recently -IT got built in 4 years A main reason for TZ's faster speed was their use of a crane called the LEFT COAST LIFTER -- which is about twice as big as the "Chessy 1000" --- and thus could do build things almost twice as fast.
@@richardhartzell7059 Talk to the Chinese . They make the bridge much faster .
Get the Gordie Howe Bridge team to build a new cable-stayed bridge. They rock.
@@motomania5985 Because loss of life isn't a concern for the Chinese.
The design they showed was very pretty. But my first thought was, with all the cables strung from the center of the roadway, there is no way to drive any kind of emergency vehicle between the two sides. Or if, for example, it was necessary to adjust for traffic from morning to evening rush hours, there would be less flexibility in changing number of lanes going in each direction incoming or out going. We have bridges in Pennsylvania that can have lanes changed over from morning rush hour to evening rush hour, by red and green lights built into the trusses over the traffic. The volume of traffic demand can be adjusted just by changing how many red or green lights are lit up.
I believe they must be talking about the main span. Thanks for your efforts to provide detalis.
You are welcome
I remember when the first original proposals for the "Outer Harbor Bridge" were published in the Baltimore Sun, circa 1970. It was nearly identical to the design they are now calling the "new design". But it cost too much, and they went with the much cheaper truss bridge, with the narrower center span giving no margin of safety around the ship channel.
Yes, but 47 years and thousands of ships passing brings complacency. If not for this ship, the bridge would last many, many more years.
@@1972Ray Time does bring complacency, and a even a scoffing at the danger of a poor engineering decision. The nearness of the towers to the shipping channel was a disaster waiting patiently for the day it would happen, as is the SS Richard Montgomery in the Thames.
Once again, money was put before safety...
Was a cable-stayed bridge really more expensive back then? 'Cause right now they're going up like gangbusters due to their cost-efficiency.
Perhaps economy of scale at work?
@@h8GW Back then, the reporting in the Baltimore Sun etc referred to the original design as "a suspension bridge with a radical new design".
The biggest cost issue, however, seems to have been the length of the main span. The cost does not simply increse linearly with the span; the cost is more like the square or even the cube of the span.
Also, the cost per span-length scales differently for suspension and for truss.
Thanks for the update, Jeff.
Nice job Jeff, thanks for the update.
Great videos again ,, thx Jeff..
I always look forward to your updates ! 👍👍
Although a tragedy , the massive effort and speed at which this is getting cleaned up is impressive !
As a Marylander who has visited Fort Armistead Park to get photos of the Key Bridge, I would love to see them work into the plan, fixing up Fort Armistead and place a memorial for the six construction workers there.
Jeff, great update. Thanks.
Thanks for watching!
Great update.
Awesome insight!
I love your channel. Please keep up the good work!
The Dali cannot be moved because it is on the bottom. If they remove most of the weight off of the front of the Dali it could be moved.
It will float up
Great video Jeff.
Glad you enjoyed it
Thank you, keep working.
Good video Jeff! Also the Gordie Howe bridge is nearing its mid-point connection!! -Bob...
I watched your new double upper cabinet install video. WOW you are awesome.
Yay! Thank you!
One advantage that the new bridge designers will have is that they can build it in the same spot using the existing approaches instead of building it alongside of an existing functional bridge and redesigning all of the approaches.
Great news update!
Hey Jeff !! With the last Construction worker being recovered --- Now full safe speed to get the Dali back to port & unloaded & the 50ft channel open again !!!! They projected by the end of May, but now looks like to be ahead of that for sure !!!! If you look at the NEW bridge in Charleston, SC ,, it looks the same design of the 1 from Italy for sure !!! 👍👍👍👍👍
Nice thing with the cable stayed design is they could build it in sections and lift them up in place, reducing closing time on the channel. Using the side of the channel to protect the supports from anything big enough to take the bridge down seems smart.
Look at how they’re building the Gordy Howe International Bridge fro Detroit to Winsor…that’s how they would build the new Key Bridge and keep the channel open…
Still No Dolphins or other bridge collision protection shown! So, We haven't learned the lesson from the Dali ?
Also, they can remove the cable stayes and replace them without closing the bridge.
Why most bridges are built like this is also down to reduce costs and maintenance and this is a proven design in this type of area as well
@@kimriley5655realistically, with ships so big moving with so much momentum, what are some extra pylons gonna do?
@@kimriley5655 This is just an artist's rendering. They've barely put out the RFP, which I'm certain includes collision protection.
Thanks Jeff, you have certainly been a professional reporting on this tragedy.
I said within the hour of the bridge collapse it would be replaced by cable stay, it would accommodate a wider channel, but, between 2000 and 2005 the MDOT announced they were building a cable stay bridge. So... of those that don't know the history of Cable Stay Bridges, they were innovated immediate post WWII in Europe to address all the bridges the US dropped during the war. Erecting a Cable Stay Bridge can for the size required can be 2 years start to finish, IF a Cable Stay Bridge specialized company does the work. They often have a set design for the masts that can be tailored (read shortened) easily to fit the needs. Nothing starts until the bidding starts, lowest bidder won't get the bid, the organization that can prove they have the capability to do the job starting 'today' and has a track record of delivery on time on budget and on design, they'll get the contract.
and, I doubt anyone will ever come close to an incident in Jacksonville Florida where a 30 foot 2 lane bridge collapsed and the company putting up the new sky way for I-95 was asked "can you give us a bid" and they said "We can do it in a few days with excess road panels", but they still put in a bid. They used two pre-fab road panels and some spare concrete pilings. 4 days. The city gave them 3 months, they did it in 4 days. 1 day to demo the old bridge, 1 day to put down the piles, 1 day to lay the road panels, 1 day to pain the stripes and inspect it, 4 days. Company? Cited zero materials outlay, only expense was fuel and labor costs. The company got paid for the 3 months work, plus an on time, on budget, on contract bonus. Company? Gave the workers the whole pot of money for working non-stop, damn near 24 hours a day for 4 days to get the job done. Old bridge was 2 lane asphalt over wood, new bridge 4 lane reinforced concrete. Everyone was happy.
Well, I mean it's not like you figured this out. It's the cheapest and quickest bridge to build nowadays so it's always the first option.
I hope you will film this construction project for the new bridge when they start building it? Great review thanks from Germany 👍😊🤗
The company who has the new design of the cable span is very versed in this , and the fact that they have a competent contractor "LANE" who can achieve this feat is a good combination. Lane has a great reputation of being able to handle large scale projects and is a US company who I believe is still based in Connecticut. Seems like they are off to a good start. The only question left is who is going to pay for it.
Very smart Italians swooping in on a potential Big Win contract for this new bridge but good on them. The fact that they found the last victim can now put closure and Move On....Great information video Jeff...TY
Gordie Howe bridge is 2,800 ft span, total length of 1.6 Miles.
And the main piers are on land, hard to get a ship there even if you try.
What they need is a HIGHER design to allow taller ships to pass.
It was not a tall ship that hit it, it was a wide ship.
The cable stayed design will be much higher than current ships.
A new bridge needs to be much higher to allow larger more modern cruise ships into the Port of Baltimore. The Carnival Pride barely cleared the Key Bridge.
It needs to be precisely as high as the other two bridges that need to be crossed, not taller.
@@travbeav Cruise ships everywhere!
Jeff you are one talented man....
They did announce that they were using demolition explosives to do the precision cuts, so I wouldn't be surprised if the concrete was done that way. Also, one of the design firms jumped the gun on the design. However, if you have watched the RUclips channel "Well There's Your Problem" (an engineering disaster podcast, with slides!) one of the hosts said it won't be like original, but more of a cable stay bridge like shown. So... no surprise.
You wonder how they cut that reinforced concrete? The wouldn’t use a diamond saw, not tough enough and it would bind. They probably used a water-jet. Notice the streaks on the ship’s hull.
Great update! Love the design from WeBuild... we have a similar design near St. Louis - the Clark Bridge at Alton Illinois - search for Super Bridge! I believe it was built rather quickly.
Whatever they do regarding a new bridge is to provide adequate protection around bridge supports in water. A cable stayed bridge is a good candidate for this bridge replacement project.
The interpretation is that they are going to enlarge the actual shipping channel (main span) to 2,300 ft. That'll mean the main pylons of the bridge will be about 500 ft further back on either side compared to the original bridge which increases safety. Also increasing the vertical clearance to 213 ft will accommodate almost all major ships in existance today.
I have seen some ideas that the salvage may involve controlled explosive demo maybe to handle the concrete pillar and road base.
It should be a bigger and more modern version of what was there. Don't just do another cable stayed clone but be original and do something to remember the old bridge.
Grady at Practical Engineering just released a video discussing that style of bridge. The example used was in Long Beach.
Eager to see how they'll commemorate the lost workers within the new bridge design. Thanks a lot for the awesome coverage.
I hope a memorial will be included, perhaps using some of the salvaged steelwork.
I hope the design of the new bridge is somehow a resemblance of the Key Bridge. The FSKB was a monument to us that live close by. Also, if the name is not kept the same you’ll see an uprising that will be as noticeable as this tragedy. Most importantly, the lives of the construction workers that were lost most certainly have their names imbedded on the bridge. Prayers to those 6 families of the construction workers, and prayers for the other 2 victims that survived this horrific tragedy. They’ll be reminded of this every time they’ll go to drive across another bridge for the rest of their lives!!
The new bridge MUST be much wider. Ships are getting bigger, so a maximum span between the pillars is necessary to stop a repeat.
Here in Widnes, Runcorn North west England we have a recently new Bridge simular in Desighn of whats being offered. Less than 5 years old. Amazed me how they built it and how quick. I saw lenghs being delivered and placed. The Bridge is not straight, It curves accross the River and ajoins other carrageways. Really clever and such a short time.
Looks exactly like the Sunshine Skyway bridge over Tampa Bay in Florida. That bridge was also knocked down by a ship.
I'm in love with The Claw!:) Gotta get me one of those.
The bridge design resembles the Zakim Bridge across the Charles River in Boston MA (construction 1997-2003). It’s a cable-stayed bridge.
Every new bridge that goes out have this same ugly design. NYC replace several bridge and now they are all the same. You won't know what bridge you are going over unless you know where you are.
I would like to see a discussion of the comparison of the longevity, strength, durability, cost, etc. of the cable-stayed bridge versus the traditional bridges such as truss and suspension construction. It seems everyone is installing cable-stayed brisges theses days. Are they as safer and more cost-effective???
Yes they are. Trusses have fracture critical components and lack redundancy, whereas cable stayed bridges eliminate that issue on almost all designs (unless it utilizes a double deck). Also, cable stayed bridges require less material, are as strong or stronger than truss designs, sway less, and are much simpler to maintain over the life of the bridge. A major advantage is a cable stayed bridge is designed for cable loss. If some cables were to fail, they can be replaced pretty easily and in many cases with only minor lane restrictions.
Great assessment. Plz move camera boom out of view. Thanks
Mr claw is a cool bit of kit.
I find it interesting that new designs are in place a mere 5 weeks after the bridge was destroyed! Kind of like the WTC, plans were drawn before the old towers were pulled!
Michel Virlogeux is a very well known and experienced bridge designer with several record breaking projects to his name, including the Pont de Normandie and Millau Viaduct. So as far as who you'd want to design the new bridge, he'd be a damn good bet.
You can change the curser shape, size and color if you go into the accessibility menu. I have a large, yellow arrow. Vision problems.
I saw Grady's channel Practical Engineering and they speculated a similar bridge design, but based on the new one at Long Beach.
They're matching the distance between the powerline towers to the west.
Look at the map st 6:00
The Gordie Howe bridge main span is 853 metres. Being built right now US-Canada border over the Detroit River.
That is a good size span
Came here to say the same.
The Gordie Howe bridge is cutting edge and is nearly identical to this "proposal". No surprise.
That's about a mile and a half right? :0)
The GH bridge was started in 2018 and won't open till fall 2025. The piers are on land so building in the water would slow that down some. The cost at this time is north of 4 billion, but that includes toll, customs and immigration facilities.
Bridging North America is the company building the Gordie Howe bridge
1:33 "The mother of all diamond cutting blades" .. Hilarious.
Good bridge to look at is the Gordie Howe bridge, there is a good channel that has all drone footage closeups of the construction techniques. One major point about that bridge design is that to increase ship headroom, the on/off ramps had to be extended considerably to avoid steep inclines.
Thanks Jeff
The WeBuild design looks beautiful. It should honour the lost souls. That's important. I hope it could also include a footpath.
It was a diamond wire cutting blade they used to cut the pillar.
Project and Budget approved for New Design with best Professionals on the Area ! 👍☝️🇺🇸🇺🇸🇺🇸👏👏👏
My guess was the concrete pier at 01:30ff was cut using a water jet. But some smarter than me people spotted a diamond wire saw. :)
I hauled gas for many years in Colorado and I can’t remember how many times I went over Loveland pass instead of the tunnel on I70. The only time we could go through the tunnel was when there was zero visibility on the pass and then it was only at the top of the hour when they would stop all the traffic and let the tankers go
I really hope the Army Corp of Engineers takes over this project as a national security priority because let's face it, that's exactly what it is/was... The proposed Italian design is perfect and is exactly what I'd imagine would have replaced it regardless of the "accelerated timeline" of the disaster...
Great design. Genoa bridge was built in 12 months and during Covid shutdowns! They know how to rebuilt FAST
Italians have a great building history.
Webuild has been building bridges according to their website for 120+ years. Their US subsidiary Lane Construction has also handled many complex projects successfully, including the I-495 Capital Beltway Express Lanes in Virginia. That was a 14 mile project which replaced more than 50 bridges and upgraded 12 interchanges. Webuild is actually doing a hydraulic tunnel project under the Anacostia River right now for DC Water. Besides bridges/transportation, they also have experience in buildings and power/energy projects.
@@tomwujek4867American Bridge out of PA will smoke any of these companies.
@@Babebebe111 They do a lot of good work, no doubt
What is the link to the website that you showed in this video?
It looks like it's Rebuilding The Key Bridge but the only website I found was Key bridge Rebuild which doesn't show the same information.
The proposed bridge looks like the new Gordie Howe bridge currently under construction joining Detroit Michigan and Windsor Ontario. The 2 sides are almost joined.
LOVE YOUR HAIR STYLE !!!!!!!~~~~ I AM GETTING IT ~~~~
At least we don't say larboard anymore. Hehehe Thanks for the update, keep safe.
Crazy
Webuild, the ambulance chasers of the engineering world.
thats news to hear ,be it sad as it is ,hopefully people can now rest and move forward with there lives,never to be forgotten ,god bless
The cutter is literally in your shot... The blue box at the top left of the cut. You can even see how the angle of the cut changed as it was almost through.
First picture I've seen of the substantial damage sustained by the Dali's hull.
Nice modern design of new bridge shown. However there is no protection for the bridge supports against the next ship having a navigational problem.
I wonder what'll happen to the drawbridge nearby when they widen I-695. Maybe that'll get replaced with a fixed span?
Most new bridge designs with a large span are going to this style. It’s a fast build, and majestic. Cable stays and traditional suspension bridges are my favorite.
I just got back from Bangkok Thailand and they have several of these cable bridges there. In fact I was able to walk across at night one of the bridges and the lighting at night was awesome. Of course walking across a much bigger bridge is probably not an option here in the US.,,,,,,,,,
do you have any pics of where the train tracks will go?
I understand the current process which is to expose the large pillar of the bridge in segments. But what will they do with the enormous concrete pillars lying at the front of the Dali?
The single cable stay looks to allow twisting in wind events. Must cable to each side to avoid.
Are they going to include small islands around the pylon bases to avoid another renegade ship.
that Company is amazing. They rebuilt Genova's bridge in record time. Never occured before in italy. They are a warranty for Baltimore.
The claw!!!!
Looks like the Sunshine Skyway Bridge 2.0
They probably use the cable saw which is a cable with diamond impregnated pieces into the cable they use them in quarries to cut marble
No mention that it's a similar design to the Skyway Bridge over Tampa Bay?
And the Zakim Bridge in Boston.
@@jballenger9240 and several new bridges in NYC. Look like someone get lazy and copy&paste. Waste of a civil opportunity to build something unique to the location.
Check out the Talmadge Memorial Bridge in Savannah, Georgia.
Hi Jeff. Check out the building collapse in South Africa. Unheard of in our country. They're still working to get people out.
The Gordie Howe Bridge being constructed in Detroit, Michigan to Windsor Ontario has a span of 853 m or 2800 feet between the main cable stayed supports. Seems this proposal for the key Bridge replacement is 500 feet less. It certainly would keep the supporting structures, well away from marine traffic that could severely damage them.
What caused the crash? Was the crew drug tested immediately? Had this happened in China the captain would have been shot.
Why would this bridge have a single cable in the middle, while the new Windsor - Detroit bridge has 2 cables, one at each side? It's 6 lanes too.
Cost? Will the harbor need to be closed for construction?
Their proposal says that the span will be 213 feet above the water, and that the bridge will be enlarged to about 2,300 feet. For comparison, look at the Verrazzano-Narrows Bridge in Brooklyn/Staten Island which is 4,260 feet between the towers and the span is 228 feet above the water. So, it seems to me that their proposal is similar to what's already in existence in the US. Just my take on things.
I wonder if they will include a barrier built around each of the pylons at the waterline to protect against a future collision? This bridge looks very much like the recent East span replacement of the Bay Bridge in the San Francisco Bay area.
Reminds me of the Gordie Howe bridge, over the Detroit River. Paid by Canada.
Who paid and own the Ambassador bridge??
Like see under water scans cause I find it interesting to go it cleard