National Heritage Area Authority Extension Act of 2021

National Heritage Area Authority Extension Act of 2021 This bill extends through FY2036 the authority for, and increases the amount that may be appropriated for, various national heritage areas. The bill also extends through FY2036 (1) the Erie Canalway National Heritage Corridor Commission, and (2) the Gullah/Geechee Cultural Heritage Corridor Commission. Further, the deadline is extended for the completion of proposed management plans for certain national heritage areas.