What a beautiful sky. The composition on this is great - the bridge bisecting the scene highlights the delicacy of the patterns on the sand and in the sky.
I love the heavy presence of the bridge with the calm water and sky. I've waved my hands around a little, and wonder about cropping it differently; the "window" on the right pulls me out of the photo a bit, although it's neat in itself. So I see two possible alternate crops, one cutting off the left side of the photo, the other one cutting off the "window."