The bridge, along with that sinuous red line, creates a perfect frame for the lower right-hand corner. Too bad what's in that frame is an amorphous black object (shadow?). Still, a very nice composition and an unusual view of bridge construction.
Interesting pattern. A picture with potential. I would have played with the DOF. Maybe making the foreground in focus and the backround blurry to diffuse the distracting lower right side.