Tuesday, August 23, 2011

Holding Together the Stone Arch Bridge.


Ever wonder how the Stone Arch Bridge, spanning the Mighty Mississipp, and transporting generations of bikers, joggers, bladers and photographers east to west and back, stays in place? And why don't those iconic stone blocks tumble hundreds of feet into the water instead?

I think I have the answer, the nuts and bolts if you will.  You can see one of them here: a very old and rusty nut and bolt. Plus some glue it seems. When some Bunyanesque torquer applies enough purchase, and connects nuts and bolts on both sides of the span, the bridge is made secure.

Seems primative, but it works.


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