Back to the Future - The Ride needed a major overhaul. The simulators were literally putting tons of pressure on the foundation every day. Florida's version is said to have moved the foundation 3-4 inches off it's original base. It was well needed for an refurbishment. Now, imagine this to get the real feel of what this structure was put through. There are about 4 people per simulator, 200 people per show. Now, the casting used to create the DeLorean and the ride vehicle could weigh in total around a ton, not including the weight of the hydraulics. When you add the hydraulics and all, you have 3-4 tons per ride vehicle. Now, times that by 12. Then keep in mind this structure has three levels, so each level has that amount of weight bearing down on the supports below. To add insult to injury, imagine those simulators moving putting all that weight pressure on different parts of the building at the exact same time.
Plus, the story takes place in the year 2015, so you knew it couldn't last beyond that date.
Funny thing about the ride... I hate promoting my site, but the front page speaks for itself.
Some photos of the ride if some of you are interested.