It seems odd I would pick two of your images as best in a challenge out of three challenges. Style. Keep up the great work. Just waiting to see what you come up with next.
Intersting how the bridge construction works as a strong border (visually) between the road and the walkway. The man walking adds a lot of interest.
What is on the bridge diagonal in front? The Yeti's footprint? :)
I would try this cropped almost down the middle, with just the large bridge strut and the man crossing. I think it's stronger that way, and still says "bridge". For what it's worth...