I like the metallic texture on the railing and the concrete texture on the ground. There a real hot spot at the top of the railing that distracts some.
Meets the challenge. I like the angle you chose and how it splits the image into the green side with the trees and the gray side with the concrete. Lighting is good, not too bright or dim.
Did you take this shot on the dam tour? Nicely composed. Your focus though seems to be a spot off IMHO. Did you use autofocuse or manual? I would rather that the rail be sharper than the trees...
TC