Moon of Alabama Brecht quote
August 2, 2007
Minneapolis Bridge Collapse

So how did this happen?

Shoddy building? Neglected maintenance?

 

Just wondering …

More pictures here.

Comments

On the infrastructure aspect this line from the WaPo account is also of problematic:

Concerned Minnesotans jammed cellphone lines, looking for news and the whereabouts of loved ones.

Too many things depend on cellphone connections. Those networks should not overload.

Posted by: b | Aug 2 2007 12:25 utc | 1

Uncle$cam in previous threads has posted quite a bit on the neglect of America’s infrastructure. I remember thinking the Chicago flooding years ago would be a wake-up call. If Katrina has done nothing to wake-up Americans, than I don’t know what will.

Posted by: Rick | Aug 2 2007 13:09 utc | 2

What a perfect metaphor for the collapse of our Republic and the wannabe empire. It just says it all.
America is going down river, folks.

Posted by: Bea | Aug 2 2007 13:18 utc | 3

It’s remineicent of Dagny Taggart looking out the airplane window and seeing the lights of NY go out.

Posted by: Ensley | Aug 2 2007 13:58 utc | 4

imagine how much worse it would be if we weren’t protecting ourselves by investing all that blood and treasure fighting the terrorists.
just to let you know what an evil person i am my first thought was of the criminal haley barbour, and how it happened in a red state.

Posted by: annie | Aug 2 2007 14:22 utc | 5

Here is a video, CNN I think, linked from a comment on RigInt. Made by a security camera, it shows the collapse from the beginning. Both ends of the severed section of the bridge begin to fall at exactly the same moment. The only thing that could cause this is timed cutting charges.
Take a look and see if I got that right or not.
http://www.kare11.com/video/player.aspx?aid=51365&sid=261171&bw=hi

Posted by: rapt | Aug 2 2007 14:52 utc | 6

methinks you are seeing things. the right end of the section clearly collapses before the left. no visible sign of a charge at the left end either.

Posted by: b real | Aug 2 2007 15:34 utc | 7

@rapt – doesn’t look so to me. The part on the right side (in the video) snaps first without some explosive smoke or anything else.
As it is one of the earlier welded steel constructions of that type it is quite possible that just one steel element snapped and it took the whole thing down. The bridge was rated “structurally deficient” last year.
It is basically a “non-redundant structure” welded steel truss bridge. A single weldseam breaking open because of vibration over a lifetime would be principally sufficent to take it down.
That’s why this type isn’t build anymore.
Some technical info on that bridge is here.
Also – why should anyone blow up that bridge?

Posted by: b | Aug 2 2007 15:46 utc | 8

Also – why should anyone blow up that bridge?
don’t you know that the only mooooslim US congressman comes from Minnesota?
I haven’t checked the knucklehead blogs yet but I would not be surprised to see them come up with this great revelation.
CNN planted the seed of doubt some time ago

Posted by: dan of steele | Aug 2 2007 16:20 utc | 9

yikes, i confused mississippi river w/mississippi state. sorry for being so sloppy.

Posted by: annie | Aug 2 2007 17:54 utc | 10

New rule: never assign to malice that which can be assigned to deferred maintenance.

Posted by: Browning | Aug 2 2007 18:06 utc | 11

@Browning – nice idea.

But of course PowerLine says

This is the kind of disaster that just doesn’t happen in the United States–a bridge spontaneously collapsing, apparently, into a river.

Just doesn’t happen – who do you believe – me or your lying eyes …

A bit goulish but anyway.
I played this with my 11 year old friend who tried to build some serious Lego bridges.
Bridge Builder. Quite simple and a small download (upper left, first link), but one gets the principle of truss bridges and their statics under dynamic load quite fast.
At least Likas did …

Posted by: b | Aug 2 2007 18:44 utc | 12

No controls. Pseudo science. Unscientific arithmetic. Long hierarchical chains.
I *imagine*:
The guy – or maybe a sweet gal wearing a cute helmet and tight pants up front on the website – sent to check and measure is a student or lowly person, earning 25 an hour, reports to a supervisor who wants no probs, earns 50 or more an hour, glances, disses, or doesn’t understand; he reports to his superior, who earns 200 an hour, on the phone, some jabbing about a structural fault, who knows, the lowly employee is fulla shit, etc, – covering his ass – on the take, he writes it all down.
The superior, top boss, in contact with the Gov (who earns far more than all the others..) says “We can handle it, don’t worry….”
Oh what a surprise! The whole thing collapses.
Individual actors in competition have no interest in the common good. Not one of the ppl in my imagined example gave a flying f** that the bridge went down. In fact, most of them can make money from its collapse. If only to keep their jobs.
Of course that doesn’t mean that there are no conscientious professionals (engineers etc) in the US, nor that this doesn’t happen in other countries.

Posted by: Noirette | Aug 2 2007 19:28 utc | 13

Here’s more stories and info about the state of bridges across the US, from Investigative Reporters and Editors, Inc.
If you’re a “legitmate journalist” (i.e. a dues-paying member of IRE), you can get access to

The U.S. Department of Transportation’s Federal Highway Administration National Bridge Inventory database lists structural evaluations and codes for all bridges in the U.S. This includes bridges on highways, railroads, pedestrian-bicycle bridges, overpasses and those designated as historically significant. The most recent data includes inspections through December, 2006. The records represent the most recent inspection for each bridge (which could be several years ago, or could be the current year).

The sorry state of bridges, in every state, is well-known. I heard someone on NPR this morning say something to the effect that, on average, one bridge/week fails in the US. Obviously not all big, splashy, catastrophic failures. Expensive stuff, this infrastructure. Amazing how much of it we can and do find trustworthy. Think how horrible it would be to live our daily lives in honest rational fear of all the things that could possibly go wrong.
“The secret of life is enjoying the passage of time…” -JT

Posted by: catlady | Aug 2 2007 20:36 utc | 14

I went back to take another look, after seeing the disagreement here.
Yes the central part of the bridge broke loose and fell first, then after standing for a bit the left part(in the video) fell. I didn’t notice that on my first viewing.
Both ends of the central section broke loose at the same time. The same time. Mighty weak structure eh? Or coordinated cutting. Oh yes and don’t forget that witnesses heard one or more explosions. Nope – just falling concrete.

Posted by: rapt | Aug 2 2007 20:52 utc | 15

Heh I notice the conspiracies abound already. The most popular with the most traction being ‘what were those workmen really doing? Is that a gas ax in your hand or are you just mad to see me?’
When everyone goes scurrying off to pick their favorite bogeyman as the target for this sort of avoidable accident the ultimate result is that the assholes who could have prevented it but didn’t because other things more important to them got in the way, get off scot free in the confusion.

Posted by: Debs is dead | Aug 2 2007 21:04 utc | 16

Don’t worry, $30bn in free aid is going to Israel, who cares about little pork projects that maintain infrastructure.

Posted by: Cloned Poster | Aug 2 2007 21:38 utc | 17

I never heard of bridges going down in Britain (my country), or in Europe (b, Noirette?) Is it significant? Of course we have fires in tunnels, perhaps the equivalent.

Posted by: Alex | Aug 2 2007 22:32 utc | 18

Politics is Personal
The 35W bridge in Minnesota collapsed yesterday. It was rated structurally deficient about two years ago. I live in the Delaware Valley. Delaware has 35 bridges with the same rating, New Jersey has 760, and Pennsylvania, sit down, 5900! (That was not a typo.) Many of these bridges have been structurally deficient for many years.
How long did the Federal Government and Louisiana know of the problems with the walls and levees that the residents of New Orleans thought were there to protect them. They all saw the GIS modelling. They all knew what would happen if a category 4 or 5 hurricane hit there. Ivan scared them. They got lucky. They never spent the money to build proper protection and they all knew what would happen.
Not to even mention healthcare for everyone, the nation’s electric grid system, lack of new refineries, and on and on.
“No, no, no, you silly citizens.”
“We’ve been spending $20 billion US dollars a month in Iraq!”
As of today, August 2, 2007, 3661 Americans have lost their lives there, 3954 total coalition forces. Anywhere from 70,00, to 600,000+ Iraqis have lost their lives. There are many more than that seriously injured. Their are millions of refugees.
I’ll stop.
You know.
The George W. Bush administration lied their way into this most recent Iraq war. They lied to Congress, the American people and the entire world. George W. Bush and Dick Cheney knew all along that Iraq was no threat, that the aluminum tubes were not for uranium enrichment, that those trailers were not mobile biological or chemical weapons’ labs, that Iraq had nowhere near the capability to strike the US with nuclear missiles in 45 minutes, and that Iraq never got close to getting uranium from Niger. They knew that most, possibly all, of Iraq’s WMD had been destroyed.
UNSCOM had worked reasonably well.
The Bush administration knows there never was a Saddam – Al Qaeda connection. They know Iraq had nothing to do with 9/11/2001.
They constantly lie.
If the House of Reprsentatives doesn’t impeach the lot of them, then I don’t know what impeachment will ever be used for in the future.
Bastards!

Posted by: Mark G | Aug 2 2007 23:40 utc | 19

fwiw. As I understand, this bridge had no piers in the water and was not a suspension bridge unlike other bridges in the vicinity (see b’s linked photos #10 in particular) resulting in a long unsupported span. The neglect of the infrastucture is to blame imo. This bridge needed to be monitored for it’s unique design.
When I went to work for bridge engineers 8 years ago this month, I was put to work on a big project for the rehabilitation of 10 bridges along a major north/south corridor (I-95) in my city. It’s all been put on the shelf since a couple of years ago. I noticed recently crossing one of these bridges that there are plates bolted to the parapet to hold it together.
Must have oil wars instead, I suppose.

Posted by: beq | Aug 2 2007 23:50 utc | 20

Alex,
I know that some bridges has fallen in Sweden. Generally pretty small ones in combination with some form of extreme weather. Sweden has a lot of country side, lots of rivers, thus lots of small bridges and not all are maintained the way they should be. For the same reasons, there are generally few people hurt though.
On the other hand, in the wintertime some rivers are roads in northern Sweden. So then you do not need bridges.
And thanks to b, I just spent two hours constructing bridges…

Posted by: a swedish kind of death | Aug 3 2007 0:58 utc | 21

Let’s see what we have here, “”We in the federal government must respond, and respond robustly, to help the people there not only recover, but to make sure that lifeline of activity _ that bridge _ gets rebuilt as quickly as possible,” says George Bush. Why? The Republican Convention is being held there in 2008.
“3 percent of Minnesota bridges were structurally deficient, placing it at the low end among states with bridge problems.” Whew. BUT, “such bridges were crossed by an average of 30,000 to 40,000 vehicles a day in Minnesota, ranking it 13th in daily traffic over deficient bridges. And, Minnesota ranks first in deaths in 2007 from bridge collapses. (Alaska ranks 1st in bridges to nowhere.) The American people rank last under this administration.
And in the interim, we can keep blowing up stuff in Iraq.

Posted by: toyboat toyboat toyboat | Aug 3 2007 3:10 utc | 22

Minnesota ranks first in deaths in 2007 from bridge collapses. (Alaska ranks 1st in bridges to nowhere.) The American people rank last under this administration.
well said. quotable.

Posted by: DeAnander | Aug 3 2007 3:22 utc | 23

Fuck the people…
Katrina victims lose in appeals court

Hurricane Katrina victims whose homes and businesses were destroyed when floodwaters breached levees in the 2005 storm cannot recover money from their insurance companies for the damages, a federal appeals court ruled Thursday.

Posted by: Uncle $cam | Aug 3 2007 3:51 utc | 24

We’re building an extension of the rail transit system here under one of those new public/private partnerships (P3’s). Hours for every aspect of the design work, and every thing else, were pre-set by MBA types. Architectural and Engineering firms working on the project are pulling their hair with the amount of administrative paper they are obligated to produce, design drawings and specifications in VERY tight time frames, fiercely controlled fees, shortage of manpower in a vibrant economy; you think a few welds aren’t going to be missed?
Our transit extension is simply new infrastructure. Repair, up-grading, etc of existing infrastructure is bogged down by the same MBA mentality. Until that mentality is crushed, eradicated, abandoned, burnt at the stake, whatever, we’re groping as a society.
And now we have to face Peak Oil, declining US dollar, and whatever else, with the same MBA’s in the way. We can’t go forward as a society until we’re rid of them. Is Bush actually a diplomed MBA?

Posted by: Allen/Vancouver | Aug 3 2007 4:14 utc | 25

Congress Estimates U.S. Will Spend $1 Trillion On Iraq War

Posted by: Uncle $cam | Aug 3 2007 4:32 utc | 26

There was a bridge in Denmark that collapsed earlier this year — it was while they were repairing it, and the only casualty was a foreman who was under the bridge, inspecting it.
A small thing I suppose, but there are lots of things that happen that you don’t hear about unless you are a local.
Furthermore, I think the number of deaths needed to make world news depends on where it happens. What I mean is, a boat capsizing in Farawaystan won’t make the news unless there are a hundred or more drowned, when it happens in “God’s Own Country”, the threshold is much lower. That’s just the way it is.

Posted by: Chuck Cliff | Aug 3 2007 7:15 utc | 27

Then, watching pics from the bridge, it occurred to me that these things weren’t built at a time where everyone and his dog rode an effing tank, errr… I mean, hummer-like behemoth over it. Could be that the increasing numbers of monsters-on-wheels has quickened the aging of that kind of structures.

Posted by: CluelessJoe | Aug 3 2007 8:44 utc | 28

Hi Allen, I’m here too.
Let’s try thetyee.ca, there’s a recent link to Canadian blogs.

Posted by: jonku | Aug 3 2007 9:23 utc | 29

Oh. And the nearby military base is doubling in size and getting six brand spanking new bridges.

Posted by: beq | Aug 3 2007 11:10 utc | 30

@askod – And thanks to b, I just spent two hours constructing bridges…
You’re welcome 🙂 Hope they hold up.

@rapt – 15 – the video
Here is the complete video with time information. That security camera took only like 2 picture per second instead of 30 as usual TV-cameras do. The bridge didn’t come down so fast as it looks.

Posted by: b | Aug 3 2007 12:34 utc | 31

Alex
There was a catastrophic bridge collapse in Portugal about 6-7 years back – quite a large death toll if I remember correctly.
Allen
The neglect of maintenance is what I would describe as the “actuarial” approach – they know the odds of this kind of thing happening and can make reasonable estimates of the frequency, lethality and cost of this. Given the vast quantity of deficient ( but not defective ) infrastructure in the US ( and everywhere else for that matter ) and the costs to rectify the problem, they’ve already calculated that the current approach is the most politically cost-effective one.
This is only going to change if there are far more frequent “catastrophic” events like this ( and NOLA ) and the actuarial balance changes, along with public pressure and political will to re-orient priorities away from defence, wars, corporate favours and tax-cuts

Posted by: dan | Aug 3 2007 13:34 utc | 32

The Star Tribune from Minnesota writes:

Structural deficiencies in the Interstate 35W bridge that collapsed Wednesday were so serious that the Minnesota Department of Transportation last winter considered bolting steel plates to its supports to prevent cracking in fatigued metal, according to documents and interviews with agency officials.
The department went so far as to ask contractors for advice on the best way to approach such a task, which could have been opened for bids later this year.

He said inspectors have long been on the lookout for metal fatigue and cracking in the bridge because it was designed before engineers learned about dangers to bridges from fatigue cracking.
“Up until the late 1960s, it was thought that fatigue was not a phenomenon you would see in bridges. Unfortunately that was a wrong assumption,” Dorgan said.

A construction industry official who met with MnDOT about shortcomings on the I-35W bridge told the Star Tribune that there have been ongoing concerns among some MnDOT employees about the safety of this and other similar bridges.
“There were people over there that were deathly afraid that this kind of tragedy was going to be visited on us,” the industry official said. “There were people in the department that were screaming to have these replaced.”MnDOT has been trying to move these ‘fracture critical’ bridges up in their [budget] sequencing so something like this wouldn’t happen,” the source said.

But MnDOT didn’t have enough money to do some immediate and solid repairs …

Posted by: b | Aug 3 2007 14:10 utc | 33

For years, antiwar groups have been saying that in general, except for the soldiers and their families, Americans are not having to pay any personal price for the war in Iraq. After last month’s pipe blowing up in NYC and now the bridge in Minnesota — there are a lot of bridges in the country rated in far worse condition — you could almost say that this is the beginning of Americans paying a personal price for that war. With all the billions going to Iraq, looks like there hasn’t been much by way of funds to fix infrastructure back home. So if you want to know the real cause of the bridge collapse, it’s the war in Iraq. When you go to war will all the money you have, you don’t have much left back home.
Maybe “BRING HOME THE MONEY” would resonate more than “BRING HOME THE TROOPS” with some people.

Posted by: Ensley | Aug 3 2007 14:24 utc | 34

Ensley, Wall St. got hysterical when Clinton announced he’d budget money for infrastructure in ’93. They want it defunded to provide a pretext for them to piratize it. It has nothing to do w/the war.

Posted by: jj | Aug 3 2007 16:25 utc | 35

BRING HOME THE TROOPS AND THE MONEY

Posted by: jony_b_cool | Aug 3 2007 17:22 utc | 36

Thank you b, for the faster video clip. Notice that the first frame begins with the center section of the bridge already in downward motion; the beginning is clipped out. But in spite of that it is quite evident that both ends broke loose at the same time. At the same time. (Are you getting bored yet?)
Point is, faster more continuous video does nothing to change what is more evident in the stop-action one, that both ends of the center section fell straight down at the same time. For the physics-deficient among us, this means that both ends of the span were severed at (nearly) exactly the same time; additionally you will notice that across the width of the roadway there is uniformity in the speed of collapse. One side didn’t fall first from a fatigue crack let us say, and drag the other side down to the point of fracture. You are welcome to apply the appropriate math to this; it will prove that all four corners of the center span lost support at precisely the same time, give or take a small fraction of a second. **- Cutting charges wired for simultaneous detonation -**
It is hard to see such denial on this issue after all the violent scare scenarios we have seen over the past few years; I won’t try to enumerate them but there have been quite a few of these, going back to Waco, Murrah building, several others.
Yes it could have been an accident due to bad structure and maintenance, but the evidence shows otherwise.

Posted by: rapt | Aug 3 2007 21:43 utc | 37

One more question: Why did the WHOLE bridge come down and not just a weak part? Ask the demolition designer.

Posted by: rapt | Aug 3 2007 21:47 utc | 38

Rapt, tin-foil hat etc.
If this was a “true” terrorism act by disgruntled team of individuals (Iraqis, Iranians, Timothy McViegh types etc) that came of the blue from nowhere, the FBI would be shitting themselves and paint the picture and story we are witnessing now.

Posted by: Cloned Poster | Aug 3 2007 22:03 utc | 39

PS: I just think it fell down because there is more pork in Alaska for bridge building. Interesting link here:

Other fine bridges survive in Iran, such as the Bridge of Khaju at Isfahan (1667), with eighteen pointed arches, carrying an 85ft (26m) wide roadway with walled, shaded passageways, flanked by pavilions and watch towers. This magnificent bridge, combining architecture and engineering in splendid functional harmony, also served as a dam, and included a hostelry where travellers found cool rooms for rest and refreshment after hot desert crossings.

Do you remember the nursery rhyme as a kid?
London Bridge is Falling Down, my Fair Lady.

Posted by: Cloned Poster | Aug 3 2007 22:25 utc | 40

@ Cloned Poster – Thanks for the “Interesting link”. Fascinating and to think that 8 years ago they sat me down and said, “draw a pier cap” and I’m “what’s a pier cap?”.
btw, the company I work for is in this, up to our necks. We got an email this morning: “Don’t talk to the media”.

Posted by: beq | Aug 4 2007 2:44 utc | 41

@rapt – I don’t see the center coming down on both sides at the same time – but maybe that are just my eyes …
There are several quite possible and plausible reasons why such a construction would come down. Metal fatigue, rust, neglected maintanace, overload, … It’s a “single failure” bridge construction – optimized for cost with the result that any part-failure will kill the whole bridge. I looked through the flickr albums of that bridge – quite some rust and in all quite a problematic structure.
Intend is in no way visible here – who would benefit? The republican governor who twice vetoed the gas-tax that would pay for better infrastructure? As for the rest coming down – easy to explain – these bridges are build for balance – if one part comes down the others lose their balance and come down too.
As for beq’s “Don’t talk to the media” – normal procedure to cover up bad maintainence, delayed repairs, missed chances etc ..
You really can take off the tin foil hat in this case …

Posted by: b | Aug 4 2007 5:10 utc | 42

rapt–
Thank you much for the link.
No, you do not understand what you are looking at. The near end of the bridge gives way first. What we can not see is if both the left and right sides give way at the same time. But this proves nothing: One side could twist, crack, and bring down the other. If both sides of the near end were in poor condition, this would not be strange at all. One simply needs more evidence.
But the far end of the bridge does not fall for several moments. The near end is descending, and the entire structure is pivoting, slowly. As the near end accelerates in falling, more stress–downward–is placed on the far end of the span. The span starts with NO angular momentum, and the far end has to supply it, but that means increasing stress. For a moment it holds, anyway, but when the downward stress exceeds its capacity it buckles downward. This reduces the stress on the far end, and reduces the energy going to turning the span end over end. The span falls into the river, turning SLOWLY end over end. So slowly that the near end hits only a moment before the far end. But definitely before.
Of course, a bomb WOULD do as well as a fatigue crack to start the collapse, but the manner of the fall reveals nothing. To distinguish malice from accident, you have to look at the component that initiated failure.
For now I’ll bet on fatigue failure.

Posted by: Gaianne | Aug 4 2007 6:04 utc | 43

I took your advice b, and removed my tinfoil hat. My scalp still itches and I have a red stripe across my forehead. Plus my hair is mussed up.
I can see that the evidence so far doesn’t say to others what it says to me. Surely I am prejudiced due to the obvious criminality of the PTB, by which I mean in this case, and in others, that most of the players have no idea what exactly is going on. This stuff is done on a need-to-know basis; remember that term? In other words an operation like this one doesn’t require the collusion of the mayor or the governor or the police chief or any of their staff in any department. All are innocent except for the small team that placed the charges, which most likely came from somewhere far away from Minnesota.
The purpose? Qui bono? Similar to all the others; to raise and maintain the fear level and to distract attention from serious crime in DC. There is even a fair possibility that, as with the asbestos problem in the Twin Towers, there wasn’t money to fix it so blowing it up was a good option. See how quickly the fed govt stepped up within hours to volunteer the funds for a new bridge. Lets face it, the old one was unfixable because it was designed wrong. Patches were not enough.
BTW I am a mechanical engineer and I do have some experience in these structural things.

Posted by: rapt | Aug 4 2007 19:26 utc | 44

Troubled Water.

Posted by: Cloned Poster | Aug 4 2007 20:10 utc | 45