There are none to re-open.
You have to start from scratch. And pay the costs.
There are some private mental institutions left - my violent schizophrenic cousin died in one, fortunately, my aunt was able to pay for it. Otherwise he would have been on the street continuing to violently attack people - he was repeatedly picked up by the cops and jailed, only to be repeatedly released back onto the street.
Whatever the price is for the government to open back up these institutions, it is worth it to protect innocent people. Especially given how much $$ is wasted on stupid things (like my state’s “high speed rail” - 18 years, billions spend - and not a single inch of track has been laid).