Where in Virginia are you starting from? If on the Western end, I would go I-77 to US-19 to I-79 to I-90 to I-190 (exit 53) over the Grand Island bridge to the KOA. Regardless of where you start from, you'll have to get on the I-190 and go over the Grand Island bridge to Exit 18A (Grand Island Blvd.) to the campground.
2020 Silverado 2500HD LT, CC, 4X4 6.6 Duramax
2021 Grand Design Reflection 311BHS
I asked him to do one thing and he didn't do any of them.