As depressing as they are, those are some great aerial pics.
I assume they want it open as long as possible, but I question how long that path stays open through Amity? With demolition moving along quite well, I'd assume they'd start demolishing the rest of Amity in a matter of months, if not sooner. And when that path does close, I wonder if a temp bridge will be installed connecting San Francisco and World Expo, similar to the one used at IOA during Phase I.