June 23, 2013 - A Harp of a Bridge

Puente del Alamillo (Alamillo Bridge)
Designed by Santiago Calatrava
Seville, Andalusia, Spain

Seņor Calatrava designed and built this bridge, and one other, for the 1992 Expo (World's Fair) on La Cartuja Island in Seville, Spain.

The bridge crosses the Guadalquivir River, connecting the old quarter of Seville with the island. Construction on the bridge began in 1989 and was completed in 1992.

Type: Cantilever spar cable-stayed.
The deck is secured by a single, cabled pylon angled at 58 degrees.
Span: 200 meters

Details, and another good images, via About.com Architecture

Image via PatsSoxfan

More great images at Amazing Wallpapers

Beautiful!

The roadway in Seville is running almost due east/west,
so there wasn't much of an opportunity to make it into a sundial.

But a near-copy design was built a few years later outside
Redding, California where the walkway does run due north/south.
Some nice photos of this "Sundial Bridge" over the Sacramento River are here ...
.

Quote:

Originally Posted by Lamplighter But a near-copy design was built a few years later outside Redding, California where the walkway does run due north/south. Some nice photos of this "Sundial Bridge" over the Sacramento River are here ... .

While 95% of a bridge is still zero bridges, that does look like a remarkably contained bit of damage.

If I recall correctly someone actually ate it on that failure. That was the work of the Loma Prieta earthquake

Of course the new lovely bridge above is the one where 30 of the foot-in-diameter, 20 foot long bolts have snapped while they were torquing them down. DOH!

If you are into unique bridges, there are 25 images of "Amazing Bridges" here.

The "humble" Sundial is #16, and Seville's Alamillo is #23.
IMO, the one with the highest "cute" factor is # 5,
...London's "Rolling Bridge, but these 25 are quite amazing.

There's a cool pedestrian bridge in Freiburg Germany. It's a suspension bridge that's got a concrete walkway that follows the supporting cables instead of hanging from them.

I've got a picture around here somewhere...

Here it is. See those curves? Definite suspension bridge.

Attachment 44436

Doesn't "to suspend" mean "to hang?"

Okay, dictionary.com says: "a bridge that has a deck suspended by cables or rods from other cables or chains that hang between two towers and are anchored at both ends"

So, how can it be suspended by cables underneath? Sounds like a "tension" bridge. ?

Quote:

Originally Posted by SPUCK Of course the new lovely bridge above is the one where 30 of the foot-in-diameter, 20 foot long bolts have snapped while they were torquing them down. DOH!

Quote:

Originally Posted by Lamplighter If you are into unique bridges, there are 25 images of "Amazing Bridges" here.

I live in Redding..moved here from SF. Not really the middle of nowhere but then again not close to much either..lol.. The bridge is nice but not worth the drive from the Bay Area...if you make the drive enjoy our lakes and mountains..that is where the real beauty is in my backyard.

NorCal

Quote:

Originally Posted by glatt There's a cool pedestrian bridge in Freiburg Germany. It's a suspension bridge that's got a concrete walkway that follows the supporting cables instead of hanging from them. I've got a picture around here somewhere... Here it is. See those curves? Definite suspension bridge. Attachment 44436

Just because I think it's a neat word... conchoid

good news, it's a neat word

bad news, it has nothing to do with that curve.

Aw, think of all the disappointment out there in all those conch communities

It's a catenary.

So named for the cat-that-ate-the-canary

Quote:

Originally Posted by SPUCK It's a catenary.

Interesting. I really didn't think it was a catenary since it had the concrete loading it.