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Breaking: Bridge Collapse in Minneapolis
KSTP TV 5/ME | 8/1/07 | Me

Posted on 08/01/2007 4:28:27 PM PDT by ButThreeLeftsDo

Just turned on the news. 35W bridge collapsed in the Mississippi River. Cars, trucks, semis.....

Fires burning, tanker trucks, at least one school bus, more than ten cars......

Just now breaking.......


TOPICS: Breaking News; News/Current Events; US: Minnesota
KEYWORDS: 35w; breaking; bridge; bridgecollapse; bridges; btld; collapse; corrosion; engineering; infrastructure; jihad; minneapolis; mosques; mothman; prayerforminnesotans; rust; slownewsday; terroristattack; transportation; twincitiescell
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To: LUV W

Nix on the “reckon”, too. That would be more Southern. :^D


2,501 posted on 08/03/2007 8:09:47 AM PDT by Shelayne (I will continue to pray for President Bush and my country, as I am commanded to do by my Lord.)
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To: Milwaukee_Guy

Somewhat disagree. Every bridge I am aware of (I used to inspect them and supervised other inspectors afterward) has bad expansion joints. Every one of them is rusted and most are totally locked up. It sometimes causes localized failures, particularly on the deck if it is concrete, however, I have never heard of that being a primary cause of failure.

My bet is a fatigue crack that was hidden or missed during inspection. The combination of bumper-to-bumper traffic and the construction machinery was more than the remaining tension (the uncracked area) could take.


2,502 posted on 08/03/2007 8:10:17 AM PDT by jim_trent
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To: jim_trent
Mianus River bridge failure.
2,503 posted on 08/03/2007 8:14:32 AM PDT by spunkets ("Freedom is about authority", Rudy Giuliani, gun grabber)
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To: jeffers

I agree. I have seen a lot of fatigue failures (most not on bridges, thankfully), and every one of them has been in a tension member or in a tension area.

I have never seen a fatigue failure in a compression member. I have seen buckling in compression and seen all kinds of different joint failures (weld cracks, poor fusion, rivet shear, bolt shear — but more often shear failure in the plate the rivet or bolt goes through — bad metal, bad repairs, bad initial welding, but I have never seen a fatigue failure in compression.


2,504 posted on 08/03/2007 8:19:24 AM PDT by jim_trent
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To: spunkets
Just hope the local bridge inspector, or engineers in charge does a good job.

Frighteningly, I live in the land of PennDOT.

2,505 posted on 08/03/2007 8:25:28 AM PDT by PennsylvaniaMom (Just because you're paranoid doesn't mean THEY aren't out to get you...)
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To: bert

My understanding was it is a riveted connection not bolted..but nonetheless, something failed.


2,506 posted on 08/03/2007 8:29:43 AM PDT by concretebob (I'm NOT pro-war, I'm ANTI - TERRORIST)
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To: jim_trent

Over at

http://www.chicagotribune.com/services/newspaper/premium/printedition/Friday/chi-070803bridgecollapse-htmlpage,0,3347666.htmlpage?coll=chi_news_local_promo

there is a good diagram.

The center span over water is 468’ (if I recall correctly) of the 1900’ total.

The whole bridge was limited to one lane each direction where there is normally four lanes of heavy traffic each direction.


2,507 posted on 08/03/2007 8:30:04 AM PDT by hlmencken3 (Originalist on the the 'general welfare' clause? No? NOT an originalist!)
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To: ButThreeLeftsDo

Cannot find links to a terrific TV documentary on The World’s most celebrated bridges - but did find this interesting site.

http://architecture.about.com/od/famousbridges/Famous_Bridges.htm


2,508 posted on 08/03/2007 8:58:37 AM PDT by sodpoodle ( Despair - man's surrender. Laughter - God's redemption)
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To: hlmencken3
The whole bridge was limited to one lane each direction where there is normally four lanes of heavy traffic each direction.

Has that been confirmed? Even 2 days later i've heard conflicting accounts, 1/2 those saying 2 lanes were open per direction (4 total), and the other half saying only 1 lane per side(2 total). Could it be the reason for the confusion was that while parts of the collapsed section was down to 2 lanes, others were still at 4?

2,509 posted on 08/03/2007 9:10:37 AM PDT by RckyRaCoCo (sing after me......de-por-ta-tion cha-cha-cha)
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To: jim_trent

Actually the bridge next to it is the 3rd avenue bridge. Not a freeway.

The 35W bridge carried traffic in both directions.


2,510 posted on 08/03/2007 9:30:33 AM PDT by toast
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To: jeffers

Very interesting analysis. Thank you.


2,511 posted on 08/03/2007 9:42:01 AM PDT by Abigail Adams
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To: spunkets

Great pics with notes. Thanks.


2,512 posted on 08/03/2007 9:42:56 AM PDT by Abigail Adams
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To: RckyRaCoCo

There were two lanes going in both directions. It would be quite rare for a major freeway to be down to one lane only in each direction during rush hour. (Sometimes they do it on the weekends.)


2,513 posted on 08/03/2007 9:52:34 AM PDT by Abigail Adams
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To: RckyRaCoCo; hlmencken3

Road or bridge construction control varies hour by hour, I would think - and at Rush Hour usually they make necessary adjustments. Probably not a conflict - just a time difference.


2,514 posted on 08/03/2007 9:55:33 AM PDT by sodpoodle ( Despair - man's surrender. Laughter - God's redemption)
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To: Abigail Adams

OK, thanks for the information. It helps to know the facts.


2,515 posted on 08/03/2007 9:56:37 AM PDT by RckyRaCoCo (sing after me......de-por-ta-tion cha-cha-cha)
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To: toast

Thanks for the information.


2,516 posted on 08/03/2007 10:11:11 AM PDT by jim_trent
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To: Dead Corpse

“They can have my 1978 Camaro when they pry it from my cold dead hands....”

There will allways be gas for those willing to pay for it - but the more people taking light rail, and driving the ity-bitty electric cars, the more gas left at a more reasonable price for you.


2,517 posted on 08/03/2007 10:12:12 AM PDT by RS ("I took the drugs because I liked them and I found excuses to take them, so I'm not weaseling.")
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To: jim_trent

Actually I made a mistake. It’s the 10th avenue bridge.

The 3rd avenue bridge is on the other side of the stone arch bridge. :)


2,518 posted on 08/03/2007 11:34:40 AM PDT by toast
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To: toast

Interesting article here about the inspections and decisions made:

http://www.startribune.com/10204/story/1339411.html

“According to a source with knowledge of the state and federal investigations, MnDOT is focused on the east side of the northbound section of the bridge past the Washington Avenue entrance as the likely spot where the bridge first gave way.”


2,519 posted on 08/03/2007 11:43:37 AM PDT by Abigail Adams
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To: Enchante

You make several very good points.


2,520 posted on 08/03/2007 11:54:27 AM PDT by Palladin (Judge Munley is a nincompoop.)
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