60 STAT.] 79TH CONG. , 2D SESS.-CHS. 693, 694-JULY 29, 1946 SEC. 2. That the Act entitled "An Act to provide for the payment of a military instructor for the high-school cadets of Washington, District of Columbia", approved June 4, 1935, is hereby repealed. Approved July 29, 1946. [CHAPTER 694] AN ACT To amend and supplement the Federal-Aid Road Act of July 11, 1916, as amended and supplemented, to provide for the design and construction of dams so that they will serve as foundations for highway bridges, to provide for the design and construction of highway bridges upon and across such dams, to authorize the granting of easements and rights-of-way in connection therewith, and for other purposes. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That hereafter each executive department, independent establishment, office, board, bureau, commission, authority, administration, corporation wholly owned or controlled by the United States, or other agency of the Government of the United States, hereinafter collectively and individually referred to as "agency", now or hereafter having jurisdiction over and custody of any dam constructed or to be constructed and owned by or for the United States, shall be, and is hereby, authorized, with any funds available to it, to design and construct any such dam in such manner that it will constitute and serve as a suitable and adequate foundation to support a public highway bridge upon and across such dam, and to design and construct upon the foundation thus provided a public highway bridge upon and across such dam: Provided,That the highway department of the State in which such dam shall be located jointly with the United States Commissioner of Public Roads shal first determine and certify to such agency that such bridge is economically desirable and needed as a link in the State or Federal-aid highway systems, and shall request such agency to design and construct such dam so that it will serve as a suitable and adequate foundation for a public highway bridge and to design and construct such public highway bridge upon and across such dam, and shall agree to reimburse such agency pursuant to section 4 hereof for any additional costs which it may be required to incur because of the design and construction of such dam so that it will serve as a foundation for a public highway bridge and for any expenditures which it may find it necessary to make in designing and constructing such public highway bridge upon and across such dam: Provided further, That in no case shall the design and construction of a bridge upon and across any such dam be undertaken hereunder except by the agency having jurisdiction over and custody of the dam, acting directly or through contractors employed by it, and after such agency shall determine that it will be structurally feasible and will not interfere with the proper functioning and operation of the dam. SEC. 2 . Construction of any bridge upon and across any dam pur- suant to this Act shall not be commenced unless and until the State in which such bridge is to be located, or the appropriate subdivision of such State, shall enter into an agreement with such agency and with the Commissioner of Public Roads to construct, or cause to be con- structed, with or without the aid of Federal funds, the approach roads necessary to connect such bridge with existing public highways and to maintain, or cause to be maintained, such approach roads from and after their completion. Such agreement may also provide for the design and construction of such bridge upon and across the dam by such agency of the United States and for reimbursing such agency the costs incurred by it in the design and construction of the bridge 709 49 Stat. 320. D. O . Code §31-622 . July 29, 1946 [H. R. 6324] [Public Law 562] Construction of dams for highway bridges. Certification to agency, etc. Construction by agency having custody of dam. Agreement with State.