Dead Opossum

I went on my walk today.  As I was walking, I saw a dead animal.  Upon closer inspection, I realized it was an Opossum.  Out of its pouch/stomach, there was a baby moving around.  Across from it was a place that said Wildlife Management.  I tried to walk in, but they had the doors locked.  I sent them a message.  I hope they help the critter.  I looked for a Vet, but there are none that I know of.