I like these! Number 3 is definitely my favorite w/ the fog and having it black and white really emphasizes the 'beak fathomless depths under the bridge'. The lone car up top is nice as well as it really adds a feeling of isolation to the scene.
Plus I liked how you shared photos from all different seasons and times of day. :thumbup:
2 is excellent. Yup, a little soft...looks like you did some tonemapping..you might try a bit of USM on it after the tonemapping...maybe selective USM on the bridge and upper mountain range?
3 is also excellent. Both are wallhangers for me...just for different purposes. #2 I could see hung in a house. 3 would make an awesome print to have hung in an office.