|Greetings from the Critique Club!
First off, a very well-seen capture in that you knew exactly where to look for the setting sun to help illuminate your subject. Problem is, the bridge is supposed to be the subject, not the setting sun. And as the bridge is virtually invisible, there is nothing for people to see the ugly/beauty within. Composition obeys the rules of thirds but the lack of light obscures any details.
I am somewhat bewildered by your settings. A very high shutter speed couple with a very low ISO are more suitable for shooting a fast-moving subject, like a bird in flight, in bright daylight. For a sunset shot of a bridge that has no lights at all on it, you want a tripod, a relatively high ISO (start around 500 and go up from there), and a very slow shutter speed...as in slow enough to require the use of a tripod, in order to bring out the detail in this bridge. Even if you had to shoot a little bit fast so as to not get bleached out by the sunset, you would have only had to wait a few minutes for the light to soften.
Hope this critique helps, feel free to pm me with any questions.