An interstate bridge has collapsed in Washington state | Page 4 | TigerDroppings.com
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REG861
Vanderbilt Fan
New Orleans
Member since Oct 2011
21980 posts

re: An interstate bridge has collapsed in Washington state

quote:

Literally my nightmare. I have a huge fear of driving on a bridge that collapses.


This was me as a kid, except it was specifically the Huey P bridge
This post was edited on 5/23 at 11:59 pm


okietiger
Air Force Fan
Chelsea F.C. Fan
Member since Oct 2005
28974 posts

re: An interstate bridge has collapsed in Washington state
Part of it comes from living in Oklahoma where we have some of the shittiest bridges in the country. Would be such a fricked up feeling falling in your vehicle as the bridge goes unexpectedly.


BananaHammock
LSU Fan
Californication
Member since Aug 2011
8423 posts

re: An interstate bridge has collapsed in Washington state
quote:

Huey P Bridge
I had negative penile inches each time while driving across it.


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The Boat
Duke Fan
Member since Oct 2008
66327 posts

re: An interstate bridge has collapsed in Washington state
quote:

Part of it comes from living in Oklahoma where we have some of the shittiest bridges in the country.

At least it took a couple of barges to take out the I-40 bridge.

This I-5 bridge looks like a piece of shite. Someone already said this but that's a horrible looking design.


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Zantrix
Southeastern LA Fan
Parts Unknown
Member since Nov 2009
7940 posts

re: An interstate bridge has collapsed in Washington state
quote:

Literally my nightmare. I have a huge fear of driving on a bridge that collapses.


Hence why I hate having to come over the "newer" bridge in BR in the afternoons - can literally feel the decks swaying when traffic westbound is flowing and eastbound is at a stop. It's like my a-hole is trying to chew a hole in the seat.


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RogerTheShrubber
LSU Fan
Juneau, AK
Member since Jan 2009
99638 posts

re: An interstate bridge has collapsed in Washington state
quote:

Literally my nightmare. I have a huge fear of driving on a bridge that collapses.


Yeah.. I wouldn't drive on collapsing bridges either...

Used to have this phobia going across tall bridges but got over that one. Never got over my tall building phobia though.


longhorn22
USA Fan
Nicholls St. Fan
Member since Jan 2007
37851 posts

re: An interstate bridge has collapsed in Washington state
any updates?


LSUDAN1
LSU Fan
Member since Oct 2010
1443 posts

re: An interstate bridge has collapsed in Washington state
I have told many friends if they would stop at every bridge, get out and look underneath, you would never go over that bridge again.


TheDiesel
LSU Fan
Houston via Baton Rouge
Member since Feb 2010
2492 posts
Online

re: An interstate bridge has collapsed in Washington state
People keep saying "some engineer is going to get sued". The bridge was built 60 years ago so I am pretty sure the designers are pretty much all dead at this point.

eta. What is the typical design life of bridges like these?
This post was edited on 5/24 at 8:48 am


d6k
LSU Fan
New Orleans
Member since Dec 2005
1145 posts

re: An interstate bridge has collapsed in Washington state
quote:

how was the old I-10 Twin Span completely destroyed by Katrina


IIRC, they said that the way that the original twin spans were built, the sections of bridge were not fastened down to the concrete pillars? I thought that I had read they were just sitting on them, so when the surge came in it just lifted them up and into the lake


goldenbadger08
LSU Fan
Dixie
Member since Oct 2011
28930 posts

re: An interstate bridge has collapsed in Washington state
quote:

And the Huey p is still chuggin along...


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Croacka
UNLV Fan
Denham Springs
Member since Dec 2008
54637 posts

re: An interstate bridge has collapsed in Washington state
quote:

eta. What is the typical design life of bridges like these?


Probably 50-60 years, but possibly up to 75

I read that the whiskey bay bridges on I-10 are past their design life but inspections show that they should be good to go for quite a while longer
This post was edited on 5/24 at 10:32 am


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Jackie Chan
LSU Fan
Hong Kong
Member since Sep 2012
1691 posts

re: An interstate bridge has collapsed in Washington state
quote:

Huey p


Scares the crap out of me


DownshiftAndFloorIt
LSU Fan
The devil dreams on an idle horse
Member since Jan 2011
42343 posts
Online

re: An interstate bridge has collapsed in Washington state
Driving across the Huey p when it has a train on it


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saderade
New Orleans Saints Fan
America's City
Member since Jul 2005
21578 posts
Online

re: An interstate bridge has collapsed in Washington state
quote:

traversed that bridge on the way to Vancouver.
Same and that is always a fear of mine especially over the big Mississippi bridge.


EA6B
Navy Fan
TX
Member since Dec 2012
1754 posts

re: An interstate bridge has collapsed in Washington state
quote:

Back in the day, they used slide rules, which were much more imprecise, so they overengineered everything. Now the tolerances are much finer. Thanks, computers


Negative, if you know what you are doing you will get the same answer as a calulator out to 3 decimal places. Is being off 1/10,000th of an inch going to cause the bridge to collaspe? However using computers for stress modeling is a different thing.


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Boudreaux35
BR
Member since Sep 2007
8960 posts

re: An interstate bridge has collapsed in Washington state
quote:

obsolete design.


Most designs that are over 70 years old are technically obsolete.

quote:

The bridge was built in 1955 and was listed as "structurally obsolete" by the National Bridge Inventory


This is incorrect. The classification is FUNCTIONALLY obsolete. There is a big difference. If it were structurally "obsolete" it would be posted for weight limits. Functional has to do with a lot of other factors like geometrics. What may very well have been part of the reason for that classification was that the vertical clearance for traffic was lower than standard which may have attributed to the collision by the oversized vehicle.


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AutoYes_Clown
Alabama Fan
Baton Rouge, LA
Member since Oct 2012
2229 posts

re: An interstate bridge has collapsed in Washington state
I used to design and inspect bridges before coming to evil petro chem. Notice the corrosion on the galvanizing at failure points.

Image: https://pbs.twimg.com/media/BK_6txyCEAATwtL.jpg


Bridges require constant maintenance and up keep that costs money. In extreme conditions (north gets cold + corrosive ice & snow abatement... coasts get salt coated), the bridges are not inspected frequent enough in my opinion. Most states/municipalities have a rotation of bridges they check. It is literally a full time job for a crew of people that some bridges go 10+ years between inspections.

Most of our failed inspections I came across were due to unreported roadway incidents, water traffic collisions, and pigeon poop.

A huge problem we are facing is that the interstate system was funded by war money. The system was mostly designed for 30-40 year life span (you do the math). Now there is no more war money to keep up with maintenance, let alone growth and widening. The money has to come from somewhere and it will be interesting on where it comes from.


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PhiTiger1764
LSU Fan
Lurker since Aug 2003
Member since Oct 2009
8351 posts

re: An interstate bridge has collapsed in Washington state
quote:

IIRC, they said that the way that the original twin spans were built, the sections of bridge were not fastened down to the concrete pillars? I thought that I had read they were just sitting on them, so when the surge came in it just lifted them up and into the lake

Correct. The slab spans were not designed to withstand any uplift force. The weight of the slabs were plenty heavy enough to keep the slabs in place to function safely. Water reaching up to the bottom of the slabs was never considered.


yurintroubl
New Orleans Saints Fan
Dallas, Tx.
Member since Apr 2008
27252 posts

re: An interstate bridge has collapsed in Washington state
quote:

quote:

IIRC, they said that the way that the original twin spans were built, the sections of bridge were not fastened down to the concrete pillars? I thought that I had read they were just sitting on them, so when the surge came in it just lifted them up and into the lake



Correct. The slab spans were not designed to withstand any uplift force. The weight of the slabs were plenty heavy enough to keep the slabs in place to function safely. Water reaching up to the bottom of the slabs was never considered.


I was told that nother thing was that the Hwy 11 Bridge was already at least partially underwater when the actual storm surge came through. The way the storm came in pushed an initial swell of water into the lake which brought the water line up significantly prior to the surge coming through. The Hwy 11 bridge being much lower than the twin spans. The volume of water that got up under it was significantly less so it didn't take out the concrete slabs.


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