Miami Bridge Collapse

[BPTactical]

Notice anything missing?

https://www.miamiresidence.com/image...-bridge-19.jpg

Suspension structure.
One would think they would have temporary shoring in place until the suspension structure was in place.

[Gman]

Suspension structure.
One would think they would have temporary shoring in place until the suspension structure was in place.

...or it was calculated that it was strong enough in the interim since the bridge wasn't open to foot traffic or other dynamic loads.

[hollohas]

Bridges can be built without center columns or suspension cables. (Truss Bridges). But I agree, that was one strange looking bridge. Typically you see support webs/diagonal members that are symmetric, this one had webs that weren't.

The tensioning cables were likely in the top chord. But you'd expect to see them extend out from the ends of the top and anchor somewhere. I haven't seen any pictures that show that.

[Gman]

A Colorado connection...

Rep. Mario Diaz-Balart, R-Fla., who represents part of Miami in the U.S. House, said the engineering company monitoring the project, BDI of Louisville, Colorado, "is super well-renowned, so that is why this is beyond shocking."

BDI said in a statement that it was "deeply saddened" by the collapse.

Collapsed Florida walkway built with 'accelerated' technology

[BladesNBarrels]

ABC - Accelerated Bridge Construction, Build the bridge next to the highway and then install in 48-72 hours.
Saves up to years of road diversion, etc.

"All progress requires change, but not all change is progress" (Dean Bennett)

[Irving]

It was the largest U.S. pedestrian bridge to have been moved that way and the first in the world to have been built from so-called self-cleaning concrete, which grabs pollutants from the air, the university said.

That sounds like self-dirtying concrete to me.

[hollohas]

That sounds like self-dirtying concrete to me.

Exactly.

[BushMasterBoy]

They like to build like that in Florida. They stress the concrete with cable or rods. I think the math was wrong on this long piece. They are not real fond of just plain steel, the salt air makes for a lot of maintenance. Castable ceramic bridge is probably not a good idea. Another sad story.

[Gman]

The bridge was supposed to last 100 years. I had wondered if it would become a hazmat site before then requiring an elaborate disassembly to avoid releasing the pollutants.

Maybe they should have just planted some trees instead.

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[Skip]

You guys are quick to blame the government engineers but it's clear gravity is the problem.

Ban gravity = no bridge collapses