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Regional Boards => Central States => Topic started by: uozzim on September 13, 2024, 02:28:31 PM

Title: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: uozzim on September 13, 2024, 02:28:31 PM
The topping out happened on Wednesday and now the construction cam shows that girder isn't where it's supposed to be.

The damage occurred sometime just before noon Friday 9/13/2024:

https://app.oxblue.com/cameras/7f97ab0ac1a288981f71f1ae344972c9?openlink=modot
Title: Re: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: ilpt4u on September 14, 2024, 08:08:39 AM
Probably should go in the existing thread on the bridge work...

https://www.aaroads.com/forum/index.php?topic=28044.0
Title: Re: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: jnewkirk77 on September 15, 2024, 01:22:26 PM
It looks normal to me, unless I'm missing something over the past several days of camera shots, in which it didn't move.
Title: Re: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: CtrlAltDel on September 15, 2024, 02:07:16 PM
Are you referring to this:
(https://i.imgur.com/JSuJRZf.png)

I'm pretty sure that's just an arc in the girder. From head on, it would look something like this.
(https://i.imgur.com/iwxfJ8a.png)
Title: Re: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: uozzim on September 15, 2024, 02:14:17 PM
Look at the shot from 11:59am on Friday, September 13th.  That looked unplanned to me.
Title: Re: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: CtrlAltDel on September 15, 2024, 02:34:42 PM
Oh, this:
(https://i.imgur.com/CXIede0.png)

Yeah, something definitely happened there. It was fine both before and after.
Title: Re: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: jnewkirk77 on September 15, 2024, 02:43:28 PM
Quote from: CtrlAltDel on September 15, 2024, 02:34:42 PMYeah, something definitely happened there. It was fine both before and after.

Wow, that's bad. Looks better today, thankfully!!
Title: Re: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: Road Hog on September 16, 2024, 12:45:37 AM
How does that girder just snap back like nothing? Even if it was put back into place, there has to be some warping.
Title: Re: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: edwaleni on September 16, 2024, 08:56:53 AM
If I understand the situation correctly, the barge with the erection crane moved backward, but one of the placement cables was still attached, pulling on the girder plate. It caused several of the cross members to the adjoining girder to detach,(or weren't attached at all, hence the crane with a supporting cable still attached).

These girder plates are not fabricated for lateral strength, but for weight bearing in the vertical plane.

By tying them together with cross members, it helps them to absorb lateral movements together and forms an aggregate of lateral strength.

The beam in question is the one with the banner on it.
Title: Re: New I-70 bridge at Rocheport, MO - final girder placed earlier in week bows out
Post by: abqtraveler on September 16, 2024, 03:36:09 PM
Quote from: CtrlAltDel on September 15, 2024, 02:34:42 PMOh, this:
(https://i.imgur.com/CXIede0.png)

Yeah, something definitely happened there. It was fine both before and after.

Latest webcam image shows the girder in its proper position, with a shoring tower that has been erected beneath it.
(blob:null/e2e2dc0e-833b-4712-b3e1-19137a8108c5)
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