Not to the best of my knowledge. There have been periodic shutdowns due to the construction...for instance, earlier this month, the monorail wasn't up and running between the hours of 11am-6pm.
You should always expect there to be some delays and/or periodic shutdowns when planning on using the monorail. Even if it isn't officially 'shut down', there could very well be issues with either the track or the cars which would mean some slowdowns.