44 FIFTY-SECOND CONGRESS. Sess. I. Ch. 90. 1892. hundred and sixty feet in length, measured normal to the current of said river, on each side of the central or pivot pier of the draw; and the next adjoining spans to the draw shall not be less than two hun dred and iiity feet in length, measured normal to_the current of said river, and every part of the superstructure shall give a clear headroom of not less than ten feet above high-water mark: Provided, That the menace or tpnnn. spans of both high and low bridges shall be so located as to afford the greatest possible accommodations to the river traiiic, and a drawopening of low bridges shall, if practicable, be located next or nearshore; and the piers of said bridge shall be parallel with the current of the river when said bridge may be erected: And provided also, That sand Opening mw. draw shall be opened promptly upon reasonable signal for the passage _ Appnnmn. of boats: And provided also, That if the approaches by land to said bridge shall be built over land submerged at high wate1·, said approaches shall be provided with sufficient passages for water, in connection with the water way through the spans of said bridge, to pass the flood discharge of the Illinois River without unduly increasing the velocity of flow through the navigated spans of said bridge: And pro- Asanw navigation. vided also, That all such dikes, booms, piers, fences, wing dams, and other accessory works, that may be necessary to safely guide all steamboats, rafts, tows, and other water craft navigating said river, up to and through said draw or channel spans at any and all stages of water in the Illinois River, within a distance of one mile above and one-half mile below said bridge shall be located, constructed, and maintained at aH times as may be required by the Secretary of War: And provided also, That the approaches of said bridge by land or by water within themmw *4- M ¤¤l¤¤¤i*r limits of high water with limiting and level lines of the natural sur- ‘ face, grades of track, and proposed high-water discharge openings, ‘ within said overilowed limits along the line of such road or any road using said bridge, and all accessory works herein required among other data hereinafter required shall be indicated, shown, and located upon , ._ the maps and plans of said bridge, hereinaiterrequired to be submitted for approval to the Secretary of War. mIé¤***;lm£•:*¤¢m Sec. 3. That any bridge constructed under this act and according to· °°°its limitation shall be a lawful structure, and shall be known and recognized as a post route, and the same is hereby declared to be a post route, upon which also no higher charge shall be made for the transmission over the same of the mails, the troops, and the munitions of ‘ war of the United States than the rate per mile paid for their transportation over the railroads and public highways leading to the said Pmmeolegraph- bridge, and the United States shall have the right of way for a postal telegraph across said bridge. use by num com- Sec. 4. That all railway companies desiring to use said bridge shall ""“""· have and be entitled to equal rights and privileges in the passage of the same and in the use of the machinery and iixtures thereof, and of cm-nn. the approaches thereto, under and upon such terms and conditions as shall be prescribed by the Secretary of War upon hearing the allegations and proofs of the parties in case they shall not agree. mmumr Wiarto Sec. 5. That the structure herein authorized shall be built and lo- "l’*’""° P “· ° °‘ cated under and subject to such regulations for the security of navigation of said river as. the Secretary of War shall prescribe; and to secure that object the said company or corporation shall submit to the Secretary of War, for his examination and approval, a design and drawings of said bridge and approaches by land and by water and a map of the location, giving, for the space of one mile above and one mile below the proposed location, the topography of the banks of the river, the shore hnes at high and low water, the direction and strength of the current at all stages, and the soundings, accurately showing the bed of the stream, the location of any other bridge or bridges, and shall furnish such other infomation as may be required for a full and satisfactory understanding of the subject; and until thesaid plan and location of
