For some reason when I unwrap the bridge piece everything is bright yellow to red, even the connector piece that all the other sections have. None of the other pieces have stretching like this. Should I redo the entire bridge piece or am I doing something wrong?
Something seems off with the stretching colors lacking spectrum. Maybe you have face doubles or something..my guess is that there's something wrong with the geometry more than the UVs.
If you post a download link to your .blend (via dropbox, google drive, or equivalent service) I'll take a closer look.
Thank you for getting back, here's the link. I'll keep playing around with it in the meantime.
https://www.dropbox.com/s/uln7uelqew3j0wg/structural_master_CG.blend?dl=0
