FIFTY-SECON D CONGRESS. Sess. II. Ch. 47. 1893. 423 Across the Tennessee River at the most suitable and convenient point within fifteen miles of its junction with the Clinch River. Across the Clinch River at the most suitable and convenient point within fifteen miles of its junction with the Emory River. Sec. 2. That any bridge built under this act shall be constructed ¤lg¤•>b¤tr¤¤¤¤<1 ¤¤viwithout material interference with the navigation of said rivers or *’a l°°` either of them, beyond what is necessary to carry into eifect the rights and privileges hereby granted, and the corporation, previous to commencing the construction of said bridges or either of them, shall sub- . mit to the Secretary of War a plan of the bridges or either of them, ram to be mi. together with a detailed map of the river at the proposed site of each $2* °° S°°'°°°’Y °* bridge and for a distance of a mile above and below its site, together ` with all information touching said bridges and rivers, either or all of them, as may be deemed requisite by the Secretary of War; that as nearly as practicable the said bridges shall be at right angles to and piers parallel with the current of said rivers; and, if it be found hereaiter that said bridges or either of them materially interfere with the navigation of said rivers or either of them, it shall be the duty of Chawthe Secretary of War to require the necessary changes to be made therein at the expense of the owners; and said corporation may in its discretion construct and maintain ways for wagons, carriages, tW¤y¤ for mm and for foot passengers over and upon said bridges or either of them, ° °‘ charging and receiving reasonable toll therefor, as may be approved Tmfrom time to time by the Secretary of War: Provided, That as to — P~·*•¤•· any bridge built under this act none of the spans shall be less than Srmone hundred feet in length: And provided further, That if without a High mucudraw there shall be at low water a clear width of water way between the piers of the channel span and at the highest water known a clear height between the lowest part of the superstructure and the water surface as follows: On the Hiwassee River and on the Clinch River _ W;i¤¤¤¤¤¤·#:¤*¤* above its junction with the Emory River, a width of one hundred and Pm ` fifty feet and a height of thirty feet; on the Tennessee River a width of two hundred and fifty feet and a height of thirty-five feet; and on the Clinch below the Emory a width of one hundred and fifty feet and a height of thirty-five feet; And provided also, That if with a draw, D*=·Wl¤*·‘S¤¤· then there shall be a clear height of at least five teet between the level of the highest water and the lowest part of the superstructure and a clear width of water way on each side of the pivot pier at low water of at least one hundred and fifty feet on the Tennessee River and one hundred and twenty feet on the Hiwassee and Clinch rivers: Provided also, That the widths stated in this section shall be measured at right _ angles to the direction of the channel: Provided also, That said draw °P°““’¥ ‘*‘"“"°· shall be opened promptly upon reasonable signal for the passing of boats; and said corporation shall maintain at its own expense, f1'0lll sunset to sunrise, such lights or other signals on said bridge as the I·i¢*·¢¤-•>*¤· Light-House Board shall prescribe. Ec. 3. That the Secretary of lVar is hereby authorized and directed a§,*;°0':_f“,j{:§ gc? "° upon receiving such plans, map, and other information, and being sat- ' isfied that a bridge built on such plan and at such locality will conform to the conditions of this act, to notify the said corporation that he approves the same, and the said corporation may then, and not until then, proceed to the erection of said bridge or bridges, according to the approved plan and location; and should any change be made in crumthe plan of said bridge or bridges during the progress of the work the same shall likewise be subject to the approval of the Secretary of War. Src. 4. That any bridge and accessory works when built and 0011- m%¤Wf‘;lm::;_f°*“'* structed under this act shall be a lawful structure, and said bridge shall P"` ‘ be known and recognized as a post route, upon which no higher charge shall be made for the transmission of mails, troops, and munitions of war of the United States than is charged over the railroad leading to said bridge; and said bridge shall enjoy the rights and privileges of