Looks a little overexposed; the composition is nice although I would have angled the camera or cropped to get rid of the blank sky to the left of the tree.
Back to comment: This image appears to not be sharply in focus. You need to sharpen more after down sizing for the challenge. Most people use Unsharp Mask to bring back the sharpness lost because of down sizing. I also think this image would have been better if you would have taken it when the sun was lower. This would have allowed more detail in the bridge to show and made the sky less harsh to look at.
Neat use of motion blur to get a strong reflection. The bridge and tree are both strong compositional elements. I wonder how this might look taken a little more to the right so that the tree is more to the left and we see more of the bridge.