great DOF and colors, though the orange rocks in the foreground almost overpower the bridge in the background. selective color editing might have enabled you to bring down the tonal range in the rocks while staying within basic editing - though burning would probably do the job better. (6)
I see the triangles, but I'd be hard pressed to say that it's the emphasis of the photo. It's more incidental. If you zoomed in, or took the shot from a different perspective, it would work better for me. As it stands now, and with the trees behind the bridge, the framework blends into the landscape, removing the subject (the triangles) from the scene all together.
For appeal I would give this a 9, for the technical aspects I would give this a 9. While it would be anal to say that this photo did not meet the challenge, I think the triangular supports of the bridge fall short of being a key element of the photograph. Overall I gave this photo an 8, and an add to my favorites. It is imo one of the best photos of this challenge.