N.C. Gen. Stat. § 104-14
In such condemnation proceedings the uses for which such land or property is condemned are hereby declared to be for a purpose paramount to all other public uses, and the fact that any portion of it has heretofore been condemned by a railroad company, a street railway company, telephone or telegraph company, or other public service corporation, or by any political subdivision of the State of North Carolina, for public uses, or has been conveyed by any person or corporation for any such public uses, or vested in the State Board of Education, or by any other act dedicated to any public use, shall in no way affect the right of the State of North Carolina, or the United States government, to proceed and condemn such land and property as hereinbefore provided.
N.C. Gen. Stat. § 104-14