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jeephotog Apr 9, 2007 8:13 PM

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The Clements stone arch bridge was built in 1887 of native limestone. The two-span bridge with a main span of 57.1 feet and a length of 126.9 feet is now open only to pedestrians.

I sit in awe at the mere thought of how in the world did they get this bridge put together with these stones. I hope you enjoy.


jeephotog Apr 9, 2007 8:18 PM

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and a view with the date....

jeephotog Apr 9, 2007 8:26 PM

When was the Clements Bridge built? Although many sources list the Clements double arch stone bridge as being built in 1886 (and its centennial was celebrated in 1986) bids to do portions of the work were not accepted until late in 1887, and the bridge was not completed until sometime in 1888.

I thought I needed to clarify the date between what the locals say and the what the bridge says.


The Barbarian Apr 9, 2007 10:50 PM

Scaffolding. Any keystoned arch is irreducibly complex, which means it had to have been assembled using supporting scaffolding in order for it to be built.

It's a big item in understanding biological systems. Most irreducibly complex biochemical pathways have signs of biochemical scaffolding that made them possible.

jeephotog Apr 10, 2007 5:44 PM

That answered that Barbarian. Thanks for the explanation.


GoCubs Apr 10, 2007 7:04 PM

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Nice shots Jeep... it's been explained, but here are 2 pics to explain it to the pop-up book learners.:?

GoCubs Apr 10, 2007 7:05 PM

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And... this is from the stone arch bridge construction in Minneapolis, MN.

garlam Apr 10, 2007 8:57 PM

What a great architectural structure and great pics, Mandy. Thanks everyone for the lessons (with diagrams no less) of bridge construction.


bahadir Apr 11, 2007 5:57 PM

Ah,an old stone bridge toreveal so many stories untold...Thanks fo sharing Mandy!

jeephotog Apr 11, 2007 7:04 PM

GoCubs wrote:

And... this is from the stone arch bridge construction in Minneapolis, MN.
Great lesson GoCubs.......this tells us a lot of how things work with these bridges.

Thanks for stopping by.


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