Wednesday, August 26, 2009

You Gotta Give The French Credit Every Once In Awhile ...

From Gamellama:

 
The Millau Bridge of France stretches across the valley of the River Tarn high above the town of Millau. It is the highest bridge in the world, designed by the same firm that built the Eiffel Tower, and is one of the most beautiful designs we have ever seen.


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Often the bridge is over the clouds which hover in the valley below. Construction workers on the ground could not see what the people on top of the towers were doing beacuse of the great height and frequent cloud cover.

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This dramatic view shows workers milling about the platform, the inside of the column filled with steel and concrete to stablize the bridge against high winds. According to the firm Eiffage Group, some of the most respected architects and engineers in the world, the bridge has an estimated lifespan of 120 years.

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Once the columns were in place the roadway was inched outward slowly. Hydraulic devices pulled the steel roadbed out for 4 minutes at a time, each tug edging an additional 600 millimeters. As each section reached the edge of the last it was lowered into place and secured. Each section truly inched it's way across the top of the supports.

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For many years the A75 highway wound and twisted through the Millau Valley, crossed the River Tarn, then crawled back up the opposite side. In summer the country roads had become an unending series of traffic jams.

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Unfinished, the first sections stop at a few hundred feet out. Eventually the two sides met in the middle and were connected. Now that the bridge is complete a driver can save 100 kilometers and 4 hours of driving time by sailing over the valley below.

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Now the true beauty of the bridge is evident as traffic begins to cross the finished work. Amazing really, that something so architecturally stunning saves enough time and fuel to actually reduce pollution significantly in the river valley.

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Satellite imagery shows how the massive bridge allows a straight shot across a rugged gash in the Earth. Millau has always been a center for leather and leatherwork. Now they sell leather and people zipping over the bridge often linger in the town to enjoy the view of the bridge which has opened up tourism to the area.

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Beautiful!


Go see the rest.

4 comments:

jaujau said...

It really is quite a marvel of human endeavour. I wonder that it could ever be built here with all the mind numbing rules and regs and environmental concerns.

revereridesagain said...

I had the privilege of watching the construction of Boston's Zakim/Bunker Hill Bridge, which is of the same type, right out the window of where I was working at the time. It's amazing to see all that concrete and cable and huge pipes turned into such a graceful structure. This one is France is about 3 times longer and from the pictures it is just spectacular.

Anonymous said...

Now that is one eye catching example of ingenious human engineering right there.

And I bet the French thought of everything too - so you just know they came up with a number of clever methods to completely 'youth-proof' this ambitious new structure.

Wouldn't want some angry youth getting a bee up his bonnet to go after one of those cable masts using old fashioned Alfred P. Murrah man-made-disaster tech.

Pastorius said...

You think?

I hadn't thought about it, but it seems to me such a thing would not be possible.