[Sean M]

But the Coopertition Bridge IS a Bridge, and [G05] specifically states that "Each Bridge will be present with two basketballs."

Look at the explanation of [G06], in which it says that Bridges are illuminated if balanced (which implies this includes the Coopertition Bridge is, as expected, a Bridge.).

I agree it is vague, as there aren't any definitions this year, but it's common sense that a Coopertition Bridge is a Bridge, but is different from Alliance Bridges. I believe the GDC may have overlooked clarifying this. Reference [G14]. It is unlikely that ONLY refers to Alliance Bridges.

In other places, they specifically state Alliance Bridge [G25], or Coopertition Bridge [G41], if there is a specific bridge.