Probably, it has never been "bowled" in because of the type expansions we had. The first, in the mid 80s, included adding the chairbacks and new press box. It made sense to go ahead and build the west upper deck while the contractors and equipment were on campus building the chairbacks and press box. However, I guess they could have went ahead and enclosed the endzone during that expansion. That expansion did include adding a section on each end of the eastside.
The second, east side expansion, was the same scenario. We were adding supports for the club level and sky boxes. Why not just continue to go up while the contractor and equipment is there. But there again, we did add the bleachers in the endzone about that time. State could have went ahead and put in, at the very least, a lower structure.
But I think State did the most effecient and cost effective thing at the time. Also, I am sure someone, with much more engineering knowledge than I, could explain the advantage to adding decks, skyboxes, and etc. all at one time rather than a section at a time 10 years apart. </p>