Pittsburgh is not exactly BIG RIG friendly. Perfectly OK, if you stay on the main interstates, but you don't want to get off onto the surface streets. Oneways, bridges, tunnels. The north shore----you don't want to park over there.
Smith Grove campground in Butler, PA is 38 miles. Straight shot up Rt 28. Not a fan----mostly permanent, dusty roads, people driving gas powered golf carts, ANNOYING----water, electric, dump on way out.
Bear Run CG in Portersville, PA 37 miles. I-279N to I-79 north. Small secure place. Haven't been in a while. Do not recall pull-thru sites. In fact, it is kinda on a hill.
Racoon State Park (west of town) 41 miles. Water/electric I believe. Most SP in Pa are just water/Electric.
My house---15 miles to AGH. Large, level grassy site---NO SERVICES, the owner is a complete idiot, has an extension cord running to his own TT. The neighborhood is quiet, so no loud parties unless you invite us.
What is the going rate for level, grassy area????? The US Open is coming to OCC next year. I am less than 5 miles away?????
If I can help you with anymore info----let me know.