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[bonkers325]

Then why did the bridge in Minnesota fall down? Shit happens.

The bridge in Minnesota collapsed because a critical connection was under designed.

The bridge in China collapsed because of a near point blank explosion. Every inch from the center of blast reduces the pressure of the explosion exponentially. That's why you see safety barriers erected ten feet from important buildings.

And there is no steel in the picture because what you are seeing is the precast end of the adjacent bridge span. The span that collapsed is on the ground. Each bridge section is an independent span that spans from one pier to another. This is typical bridge construction and is commonly used in many bridges around the world.

 

[Imp]

Where's the steel?

From the looks of it, that bridge is made of prestressed concrete (concrete beams with steel tendons/cables inside under tension that compresses the concrete by pulling it together so it doesn't bend/deflect as much). Since the steel's under tension, it should snap like a rubber band when cut.

Or what the guy above said...

having said that, that deck's cross-section looks VERY thin (depth-wise) and the columns/piers are VERY slender given their height. Chinese "value engineering"...

 

[SheHateMe]

Does China even have OSHA? lol

 

[dud]

When the Chinese screw up ... they screw up!

I guess the lesson here is that the Chinese make great/powerful fireworks but weak/shoddy construction?