42 U.S.C. § 6704 — Grants providing State or local contributions required under State or local law

In addition to the grants otherwise authorized by this chapter, the Secretary^* is authorized to make a grant for the purpose of providing all or any portion of the required State^* or local share of the cost of any public works project^* for which financial assistance is authorized under any provision of State or local law requiring such contribution. Any grant made for a public works project under this section shall be made in such amount as may be necessary to provide the requested State or local share of the cost of such project. A grant shall be made under this section for either the State or local share of the cost of the project, but not both shares. No grant shall be made for a project under this section unless the share of the financial assistance for such project (other than the share with respect to which a grant is requested under this section) is immediately available for such project and construction of such project has not yet been initiated.