Theories of composition are quite varied. If you show your pictures to people you want them to experience them. The whole picture, not just part. There are general rules and they are well known, but they too can work against a photograph if they are not used in a way that compliments each other. A curved road should not lead away from the subject as it draws the eye away and so on and so forth

If it were me:
I would place the bridge above or below the horizon makeing it echo the horizon as a repeating line.

Bushes are great to have in the forground as they can be interesting. Unfortunately they can also clutter the view forcing the viewer to look only at the bush. Personally I thik this means making it very dominant and huge. Use the branches to frame with or point to the repeating lines of the horizon and the bridgethis should lead the viewer around the photograph.

My two cents