I liked the technicals on this a lot, but ultimately gave you a 5 because there just wasn't enough interest in the subject to carry me higher. As a detail shot in a photo essay, it would have been perfect; as a stand alone it didn't grab me.
A technical success from a capture standpoint, this image could have used a little more dramatic treatment in terms of tone. A different look at the subject matter and one worthy of consideration as a top twenty five image.
I like the tones and treatment. The composition does not work as good for me as it could, though. I think it's the angle of the line the rail is taking through the frame. That's not any real flaw, just an "I would have done it some other way" kind of thing.