Railway bridge collapse - GIF

Railway bridge collapse in Murmansk, Russia.

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Previously:

https://www.homemadetools.net/forum/...778#post156031
https://www.homemadetools.net/forum/...465#post154822
https://www.homemadetools.net/forum/...901#post124625
https://www.homemadetools.net/forum/...126#post125968
https://www.homemadetools.net/forum/...494#post142942

Too little too late.

looked like they were dumping riprap in hopes to stop the undermining of the center support. But at the velocity of that water the 10 inch to 1 1/2 foot sized riprap would only become abrasive particles which would hasten the erosion. Water traveling that fast can move small boulders weighing nearly a ton