The underside of the Main Street Bridge in Columbus, OH - one of only five Inclined Arch suspension bridges in the world (and the only one in North America):

Even being and architect, I had to go look up what that meant...very, very cool technology. And most certainly high tech.

The dark upper right corner is a little distracting from the wonderful white structure that is the main subject, at least my eye keeps drifting toward it.

Nice abstract presentation here.