D.C. Code § 9-107.01

For the purpose of enabling the District of Columbia to have its federal-aid highway projects approved under § 106 or 117 of Title 23, United States Code, the Mayor of the District of Columbia may, in connection with the acquisition of real property in the District of Columbia for any federal-aid highway project, provide the payments and services described in §§ 505, 506, 507, and 508 of Title 23, United States Code.