Gladwin would be about the only trail that you might be able to navigate. Everything else, I imagine, has too much snow.
Just went through the Rose City/Luzerne/Ambrose Lake loops a week ago, which had 18" less snow than now, and they impassable by bike. We hit a bit of the Ambrose loop with the sleds and the snow was deep for them. Think pushing snow over the hood of the sled if you were going slow on the trail...
You could try up by Newberry though, they only have 48" of snow on the level. Wow.