No, there are not handicapped stalls in the other bathrooms. In this particular art gallery/museum the womens' and mens' are very difficult even for some disabled people who can walk, because each is fitted with two fire doors (heavy doors that self close) - one to get into the sink area and another to access the stalls area.
If it was like @Tippon@lemmy.dbzer0.com was saying, I might feel differently but this is in a new part of the building and they are only a few years old. There's also an enormous supply closet next to them. It really shouldn't have to be like this.
Thanks, this is a great article. It completely tallies with my experience teaching higher ed as well.