Main street projects
The Secretary shall establish requirements for a project to be considered a main street project for purposes of this section, which shall require that the project—
(A) has as its purpose the revitalization or redevelopment of a historic or traditional commercial area;
(B) involves investment, or other participation, by the government for, and private entities in, the community in which the project is carried out; and
(C) complies with such historic preservation guidelines or principles as the Secretary shall identify to preserve significant historic or traditional architectural and design features in the structures or area involved in the project.