Originally? Yes. BUT... as I've stated multiple times already, the monorail has been having severe issues for the past several years.....being stuck on the 'highway in the sky' is no fun, believe me...been there, done that more times than I care to think about.
So, when Disney decided to think about closing down the monorail in order to facilitate the DVC construction at GF, they figured it would be a good time to do maintainence on the beams as well. It was going to be shut down for x number of hours anyway, why not add to it a bit and get that work done.
Why?? Because if they didn't do it now, they would have to shut the monorail down at another time in order to perform beam work. So, now they get to kill two birds with one very disappointing stone.
Here's hoping that the monorail and it's beam can be maintained in such a manner as to allow future guests uninterrupted service vs what they have been getting lately!!!