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Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
LoP Guest
lop guest
User ID: 191629
09-25-2013 11:25 PM

 



Post: #1
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
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As you can see in the video the massive bridge support pier beneath Interstate 43 at the Leo Frigo Bridge (tower drive bridge) approach sunk virtually overnight, sinking 2-4 feet into the marshy area.

This bridge was considered in good condition and safe. doomed

During the press conference they said the pier support rests on a 6 ft thick slab which is held up by 40? pilings underground which are 100 ft deep.

So, the whole thing sunk bam just like that.

It happens to be in a sinkhole area on the WI sinkhole potential map.

See sinkhole map here:

http://host.madison.com/news/local/envir...f887a.html

This is a bizarre happening. This particular bridge pier support is 70-100 feet from the fox river near where the river joins the bay of Green Bay. If that severe of water erosion is going on at a 100 ft depth it's doubtful the eroding is only at the location of that one pier support.

They don't know if it's going to sink even more. The Department of Transportation and Governor Walker had a press conference this afternoon and say the investigation is ongoing. The DOT said they may have to dig all the way down to see what's going on.
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LoP Guest
lop guest
User ID: 188296
09-25-2013 11:32 PM

 



Post: #2
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
We don't need no bridge let the spork fall, fall spork
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LoP Guest
lop guest
User ID: 191568
09-25-2013 11:37 PM

 



Post: #3
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
what kind of imbecile places a load bearing pier in a swamp, without it resting on bedrock??
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Thomas Tanner
Registered User
User ID: 102726
09-25-2013 11:43 PM

Posts: 3,526



Post: #4
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
went thru 2 years of drivin bridge pilins on my way ta work very annoying.Jhikpghf
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X
lop guest
User ID: 172741
09-25-2013 11:50 PM

 



Post: #5
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
LoP Guest  Wrote: (09-25-2013 11:37 PM)
what kind of imbecile places a load bearing pier in a swamp, without it resting on bedrock??

Ones that need a bridge? Pile below gets past the swamp to the load bearing.
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Thomas Tanner
Registered User
User ID: 150129
09-25-2013 11:54 PM

Posts: 3,526



Post: #6
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
Thomas Tanner  Wrote: (09-25-2013 11:43 PM)
went thru 2 years of drivin bridge pilins on my way ta work very annoying.Jhikpghf

even with the windows up an rock blaring ya could hear thet thing.
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Robyn Banks
blondes have more fun
User ID: 91621
09-25-2013 11:54 PM

Posts: 2,218



Post: #7
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
That's a cheesy looking dip.

[Image: bilde?Site=U0&Date=20130925&...ast-2-days]

Money is weighed. Fictions are counted.
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LoP Guest
lop guest
User ID: 191629
09-25-2013 11:55 PM

 



Post: #8
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
http://www.fox11online.com/news/local/gr...conference

The link to the presser. After Scott Walker gets done talking the DOT and engineers start.
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The Evil AC
I am not a number!!!
User ID: 666
09-25-2013 11:58 PM

 



Post: #9
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
Natural?
Accident?
Taking out the infrastructure?
Prelude too corralling?

Tick-Tock?
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X
lop guest
User ID: 172741
09-26-2013 12:04 AM

 



Post: #10
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
The Evil AC  Wrote: (09-25-2013 11:58 PM)
Natural?
Accident?
Taking out the infrastructure?
Prelude too corralling?

Tick-Tock?

Happening siht. chuckle
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LoP Guest
lop guest
User ID: 191568
09-26-2013 12:07 AM

 



Post: #11
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
X  Wrote: (09-25-2013 11:50 PM)
LoP Guest  Wrote: (09-25-2013 11:37 PM)
what kind of imbecile places a load bearing pier in a swamp, without it resting on bedrock??

Ones that need a bridge? Pile below gets past the swamp to the load bearing.

if it "got past the swamp to load bearing" it wouldn't have sunk, you dope. it's a floating footing, "supported" by merely spreading the load over a wide area of UNSTABLE ground. such a "cheapskate solution" might be suitable for STATIC LOADS (like a retaining wall), but for dynamic ones is the epitome of stupidity. it's a lesson the ancient egyptians learned from "the broken pyramid" a few thousand years ago
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LoP Guest
lop guest
User ID: 151189
09-26-2013 12:17 AM

 



Post: #12
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
LoP Guest  Wrote: (09-26-2013 12:07 AM)
X  Wrote: (09-25-2013 11:50 PM)
Ones that need a bridge? Pile below gets past the swamp to the load bearing.

if it "got past the swamp to load bearing" it wouldn't have sunk, you dope. it's a floating footing, "supported" by merely spreading the load over a wide area of UNSTABLE ground. such a "cheapskate solution" might be suitable for STATIC LOADS (like a retaining wall), but for dynamic ones is the epitome of stupidity. it's a lesson the ancient egyptians learned from "the broken pyramid" a few thousand years ago

Are you a geotechnical engineer? Did you do a SPT test or any soil borings to find the characteristics of the sub-strata?

Pile groups are an acceptable foundation even for dynamic loading. I've designed a couple pile groups under dynamic loading and as long as you understand the response characteristics of the structure you can model the ground motion and response.

This sounds to me like a faulty geotechnical investigation. Probably the supporting soil at the tip of the pile group and the friction parameters for the soil were overestimated.

Sometimes due to budget concerns you have to come up with cheaper solutions, the problem is those solutions are not widely telegraphed so the public is given a false sense of security.

Oh wait that is the primary function of government, to give the public a false sense of security.

.
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X
lop guest
User ID: 172741
09-26-2013 12:17 AM

 



Post: #13
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
LoP Guest  Wrote: (09-26-2013 12:07 AM)
X  Wrote: (09-25-2013 11:50 PM)
Ones that need a bridge? Pile below gets past the swamp to the load bearing.

if it "got past the swamp to load bearing" it wouldn't have sunk, you dope. it's a floating footing, "supported" by merely spreading the load over a wide area of UNSTABLE ground. such a "cheapskate solution" might be suitable for STATIC LOADS (like a retaining wall), but for dynamic ones is the epitome of stupidity. it's a lesson the ancient egyptians learned from "the broken pyramid" a few thousand years ago

Ok. chuckle
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LoP Guest
lop guest
User ID: 191629
09-26-2013 12:25 AM

 



Post: #14
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
At about 6 min into the presser Scott Walker stutters for the only time in his lengthy talk - when mentioning the ground the bridge is built on.

I mistakenly said the wrong distance from the water, it's 700 feet from the river.

At about 26 min into the presser they discuss the support, and the guy kind of stammers about the bedrock. It's unclear to me what he meant, somebody with engineering knowledge or geology knowledge might understand. It seemed to me he didn't know if it goes to the bedrock or not.

At another point in the presser a guy says they've never heard of this happening to another bridge before, ever. Unique occurrence.
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DON VITO
Registered User
User ID: 121020
09-26-2013 12:27 AM

Posts: 6,898



Post: #15
Bizarre Green Bay Bridge Sinks/Sags Overnight, Possible Underground Sinkhole
there will be no christmas 2013
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