Hi Gerald,
I'll side with the Screener on this one. Generally, in composition, one of the goals is to avoid significant "merges" with the main subject. In other words, you'd try to avoid a composition in which the main subject appears to touch other significant elements in the scene. Those "merges" are especially annoying when the touching elements dwarf the subject or are the same/similar color. In this case, you've got an angle on the subject that tends to minimize its profile (more or less head-on) and a massive merge with the bridge at perhaps the worst possible spot (one of the support pilings). Some may say that the locomotive appears to be supporting the bridge. You also have vegetation growing around the edges of your subject. While not a bad image from a purely technical standpoint, it's just not a great composition from an artistic perspective....and I am not an artsy-fartsy type at all.
I'd put this one on Flickr.