I'm no expert, but I think this photo could have been improved by isolating the bridge against the sky (from a lower position if possible) and applying the rule of thirds to the position of the horizon.
I think that this is a lovely picture and the only thing that I'd suggest trying differently would be to take it from a slightly lower angle, so that the horizon is hidden by the bridge.
Nice photo - would have been better for me if it was cropped with more sky and less of the foreground. I would have put the skyline about 1 third of the way up the photo
6/10
I see a good complimenting of color, or balance between the water and the sky, split nicely by the bridge, however, I'm wondering if perhaps this would be a much stronger shot by placing the bridge/horizon lower or higher. I'm not normally a real stickler for having to use the rot all the time, but I think it might help in this case.