; Administrative Expenses (1) Maintenance of funding The funding provided to any program or account under this subtitle shall supplement (and not supplant) any funding provided for that program or account under any other provision of law. (2) Administrative expenses Notwithstanding any other provision of law (including regulations), of any funds provided for a program or account under this subtitle, the applicable Federal department or agency head may use such percentage for administrative expenses as is established by the limitation for administrative expenses in applicable laws (including regulations) relating to the program or activity. 122. Highway program (a) Funding Out of funds of the Treasury not otherwise appropriated, there is appropriated to the Secretary of Transportation $4,500,000,000 for fiscal year 2018, to remain available until expended, of which— (1) $3,000,000,000 shall be made available to carry out the Puerto Rico Highway Program under section 165(b) of title 23, United States Code; and (2) $1,500,000,000 shall be made available to carry out the territorial highway program in the Virgin Islands under section 165(c) of title 23, United States Code. (b) Conforming amendments Section 165(a) of title 23, United States Code, is amended— (1) in paragraph (1), by striking $158,000,000 and inserting $3,158,000,000 ; and (2) in paragraph (2), by striking $42,000,000 and inserting $1,542,000,000 . 123. Federal-aid highway emergency relief program (a) In general Section 125(d) of title 23, United States Code, is amended— (1) by striking paragraph (4)