Nice textures in this one. I think it would've been a little more abstract and interesting if you hadn't included all of the manhole cover, but just parts of it. Btw, I have a thing about manhole covers (my Dad does charcoal rubbings of them) so I was glad to see one in the competition.
OK, I don't know your camera so what I'm about to suggest may be entirely useless. I think, instead of going for the entire manhole cover, that you could have gone for a more interesting look by getting closer and only showing a portion of the whole. Maybe the tree, the pattern surrounding it, the date, and a little of the road? As it stands, the perfectly centered oval just doesn't do much for me.
Interesting photo... I think this would be a tiny bit better if the cover was centered a little more... centered meaning that the tree was vertical in the center...