What CAUSED the bridge collapse? Old structure or what?
Have they said ?
2007-08-04 09:14:56 · 9 answers · asked by Anonymous in News & Events ➔ Other - News & Events
I do not think "old" means faulty or in need of total repair. The recent bridge collapse, in my opinion, occurred because of a unique and certain grouping of circumstances all happening and contributing to the failure. Some of the elements I believe were involved are : extreme vibration caused by construction of the newly contracted surface, higher than average wind conditions, Traffic patterns were unusually undistributed during high traffic and construction periods, ambient heat and humidity of the day, And biggest neglected maintenance.
Now,...I wouldn't say any one condition caused the problem,...I only theorize all of the conditions worked to cause a perfect accident.
2007-08-04 11:20:41 · answer #1 · answered by sheila love 5 · 1⤊ 0⤋
Old structure. And get used to those words.
In almost every place in this country in the last fifty years, people let their politicians distract them with garbage like sports stadiums while the infrastructure has been overlooked.
The bridge was, if not the first, a sure sign that the aging infrastructure is worthy of our attention.
Whether we pay attention, or go for more sports stadiums... well, that's the big question now, isn't it?
2007-08-04 09:19:36 · answer #2 · answered by Anonymous · 2⤊ 0⤋
Primarily because it was an old structure,
I believe they use road salt in the area though i could be wrong.
If they do for winter road maintenance, salt eats concrete and causes steel to rust.
Allot of bridges such as that one are built using steel rebar and concrete.
The steel holds the concrete together. however as it rusts it expands causing the concrete to crack over time and lose structural integrity.
It collapsed under rush hour conditions, in other words to much weight for the current condition of the bridge.
2007-08-04 09:23:49 · answer #3 · answered by Anonymous · 1⤊ 0⤋
Partly the structure was old. There was erosion around the bottom pilings, and the soil was soft from so much rain. Many other bridges are in worse shape.
2007-08-04 09:23:41 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Bravo, I am sure the causes given by yahoo answerers, are mostly alike and true. Opinions coincide about construction, old structure, rush hour, humidity of underground structure.
I hope the officials would profit from our answers, and they would not need us wait for one year or even more to have the answer for this "very difficult riddle".
2007-08-04 15:29:37 · answer #5 · answered by Suzan K 5 · 0⤊ 0⤋
They have said- in this report from June of 2006:
http://www.twincitiesbridgecollapse.com/MNDotBridgeReport.pdf
Read it- or just look at the photos..... and say DOI! along with me.
2007-08-04 17:03:40 · answer #6 · answered by Thom Thumb 6 · 0⤊ 0⤋
engineering based on 1950's college education and years of deterioration, odd i looked back at this and noticed i didnt get any points anyone else having that problem today?
2007-08-04 09:22:34 · answer #7 · answered by Anonymous · 3⤊ 0⤋
They said they will not have the exact cause for at least a year.But it is so sad.
2007-08-04 09:23:07 · answer #8 · answered by ....... 3 · 1⤊ 0⤋
yup old structure
2007-08-04 09:22:52 · answer #9 · answered by Lindsey H 2 · 1⤊ 0⤋