I think I had this similar problem recently, was in maya 2014 so not a version issue -

if i remember correctly, after bridging I had an inverted normal and this was stopping the whole edge loop being cleanly selected on a double click.

to check a model I go to display - polygons - face normals, and then also turn on face centers from that menu.

I also make the normals size quite short (display-polygons-normals size) if i need to, so that I can clearly see each small normals spike coming directly out of each face center and check for orientation (if they are long then sometimes an inverted normal eventually comes out through a different face and can look confusing)

nicky.