If you overnight in Cranberry Township dont expect to not get a knock on the door in the middle of the night by the CTPD. I worked out of there for 20+ years. You might get lucky but if they notice you you'll be moving down the road. There used to be a campground 3 miles from the Turnpike interchange. It was ripped out and is now the site of UPMC and the Pens practice arena, was a dump anyway. Cranberry is not a township in the typical sense of the word. It's a busy crowded mess with more laws and regulations than most anywhere, with a lot of uppity residents who will make the call if they notice you. Its a good example of urban sprawl. It's the new place you just have to live if your an *******.
Why not plan to stop further East an hour or two? Fox Den Campground is off the New Stanton Exit, two nice state parks, Kooser and Laurel Hill off the Donegal exit along with some commercial, and Shawnee SP and some commercial ones off the Bedford exit.
Too many geezers, self appointed moderators, experts, and disappearing posts for me. Enjoy. How many times can the same thing be rehashed over and over?