Thanks for these options. I'll relay my thoughts below:
#4: The box looks a little too much like a film strip to me. Can we try to have an image that has more of a bridge-like shape in there? You can see some examples if you go to Google Images and search "Bridge + logo"
#3 & 2: Same thought, but these look like a road than a film strip. Nice font choice!
I think we've taken a nice step in the right direction. Can you take a shot at creating a more abstract bridge? #9 & 7 are nice, but they are a pretty literal depiction of a bridge. Might want to see a cleaner execution with less detail.
While I'm not opposed to the bridge living "inside the box", I'd also like to see an execution with out a bridge.
WOuld also like to see if you are able to try a completely new execution if you have it in you.
I don't really like this last round (15-18). Can we try not using the box shape and shooting for an execution with a similar idea as #3 (I know this isn't yours, but I like how there are just a few simple shapes that are used to suggest a bridge).
Can you also try a version where the words "The Bridge Alliance" are formed to be shaped like a bridge?