Is Michelangelo's "Madonna and Child" still available for viewing (even though the Bruges church in which it's located has been undergoing a significant renovation for several years)?
It was when I was there in March. Enter the Church of our Lady, turn left, and it’s in the museum.
Just an FYI, the church is free, but there is a separate charge to see the Madonna - I think it's €4.
Was there today. Definitely open and worth the small admission fee. No crowds - was one of ten visitors at the time. Admission technically closes as 4:30 but my family arrived at 4:35 and we bought tickets at 4:40. Friendly and accommodating staff.
You will have no trouble; the statue is easy to see and plenty of room for viewing.
If you can fit it into your trip, I highly recommend St. Baaf's Cathedral to view the Mystic Lamb by the Van Eyk brothers.
This cathedral is located in Ghent and the Mystic Lamb and other art in the Cathedral are breathtaking and impressive.
If you're a van Eyck fan (yes there is a small fee to see the altarpiece at St. Bavo's in Gent, and you get an audioguide with it) then go see the Memlings at St-Janshospitaal in Brugge: another masterful Flemish Primitive painter. St John's has a very interesting history besides so I'd put it on the must-do list.
There's another excellent van Eyck ("Madonna with Canon Joris van der Paele") at the Groeninge Museum in Brugge. The museum has a really good collection so if you're an art lover, put that one on the itinerary too. :O)
We didn't have any trouble seeing the "Madonna" at Onze Lieve Vrouwekerk, although the poor little thing is nearly suffocated by the massive pile of baroque altar she's been stuck into.
As the OP, I can confirm that, despite the on-going renovations to the church, the Michelangelo sculpture was indeed on view, as of mid-September, in Onze-Lieve-Vrouwekerk (Church of our Lady).