The Board may designate all or any part of an existing highway as a limited access highway. When an existing highway is so designated, the Board shall where necessary extinguish all existing easements of access, light, or air.
Va. Code Ann. § 33.2-402, under Chapter 4. Limited Access Highways, Scenic Highways and Virginia Byways, and Highways over Dams..
Va. Code Ann. § 33.2-402
The Board may designate all or any part of an existing highway as a limited access highway. When an existing highway is so designated, the Board shall where necessary extinguish all existing easements of access, light, or air.