D.C. Code § 9-101.02
The Mayor of the District of Columbia shall have the care and charge of, and the exclusive jurisdiction over, all the public roads and bridges, except such as belong to and are under the care of the United States, and except such as may be otherwise specially provided for by Congress.
D.C. Code § 9-101.02
Barbed-wire fences, see § 9-1213.01 et seq. Bridges, see § 9-301 et seq. "Business streets," designation and regulation, see § 9-1201.05. Construction of public buildings, municipal center site acquisition, condemnation of public streets and alleys, see § 10-601. Criminal trespass, obstruction of public roads and highways, see §§ 22-3320 and 22-3321. Electrical wiring and conduit systems, see §§ 9-1207.03, 34-1401 et seq., and 34-2501 et seq. Jurisdiction over public roads, miscellaneous provisions, see § 9-1201.01 et seq. MacArthur Boulevard, transfer of jurisdiction to the Council of the District of Columbia, see § 9-1201.01. Naming of public spaces, see § 9-204.01 et seq. National Park Service, public streets, duties, see §§ 9-1201.04 and 9-1201.07, and 9-1201.08. Public parks and playgrounds, see § 10-101 et seq. Rights-of-way through cemeteries, see § 1-1315. Roadway widening and sidewalk establishment, lands under jurisdiction of the National Park Service, authorization, see § 10-123. Secretary of the Interior, prevention of improper appropriation or occupation of public streets, see § 9-1201.09. Street lighting, regulation of gas mains, see § 9-506. Street parking, see § 10-106. Traffic regulations, see § 50-2201.01 et seq. United States Navy Yard, railroad connection, see §§ 9-1203.02 to 9-1203.05. Water mains and service sewers, see §§ 34-2401.01 and 34-240 .