I was up in the middle of March to the Meysan Lake Trailhead Parking area, along with ~5 other cars. At that time, there was a sign and boulders placed along the road to discourage people from going higher. In mid-March, the road was in good shape with very little ice and, for that matter, rock fall..I seen a lot worse of both in years past.
This road closed sign has to be the most ignored sign in North America. However, if they are working up there that is another story entirely.