No question mark needed. I think you miss his point. He’s saying the construction is complete, and he’s right.
Things can be completely built, but still terrible. For years he’s held off on evaluating because it wasn’t built yet. Now it’s built.
What he’s “waiting to evaluate” is whether we’ve built the Golden Gate Bridge or the Tacoma Narrows Bridge.
(Sidenote: maybe “Galloping Gertie” should be our new mascot?)