D.C. Code § 9-310

No street railway company shall use the viaduct or bridge or any approaches thereto authorized by the Act of July 3, 1930, to carry Monroe Street Northeast over the tracks of the Baltimore and Ohio Railroad Company, for its tracks until such company shall have paid to the Collector of Taxes of the District of Columbia a sum equal to one-fourth of the cost of such viaduct or bridge and approaches, which sum shall be paid to the Collector of Taxes for the District of Columbia for deposit to the credit of the District of Columbia.