FORTY-EIGHTH CONGRESS. Sess. I. Ch. 215. ISS4. 105 the free navigation of said river beyond what is necessary in order to Free navigation curry into vtlcct the rights and privileges hereby granted; and in case of ""“· of ill!)' lntigxution arising from any obstruction or alleged obstruction to Liti gmomwhew the five navigation of said river, the cause may be tried before the ¤i=rl>l:<>· I·`•·¤li·ml court of the United States in the district in which such bridge or bridges may be situated. Sec. 2. That any bridge or bridges built under the provisions of this Dmw-bridge, or act um)', by direction of saiu common council, be built as 2. draw-bridge, ¤<>¤ti¤¤¤¤¤ SPM18- with :1 pivot or other form of draw, or with unbroken or continuous spans: Provided, That if said bridge or bridges shall be made with nnbroken and continuous spans, it shall not be of less elevation in any C°“m'“°*i°“· case than fifty five and one half feet above extreme high-water mark oyer the main channel of said river, as understood at the point of loca.- tion, to the bottom chord of the bridge, nor shall the spans of said bridge or bridges give a clear width of water-way of less than two hundred and fifty feet, and the piers of said bridge or bridges shall be parallel with the current of said river, and the main spain shall be over the main channel of the river and give an clear width of waterway of not. less than three hundred feet. And provided also, That if any bridge or bridges built under this act shall be constructed as a drawbridge, the same shall be constructed as a. pivotdmw bridge, with 21 draw over the main channel of the river at an accessible and the best navigable point, and with spans giving :1, clear width of waterway of not less than one hundred and sixty feet on each side of the central or pivot pier of the draw, and the next adjoining span or spans to the draw shall give ai clear width of water-way of not less than two hundred and fifty feet, and said spans shall not be less than thirty feet above low-water mark and not less than ten feet above extreme highwvater mark, measuring to the bottom chord of the bridge or bridges, and the piers of said bridge or bridges shall be parallel with the current of the river where said bridge or bridges may be erected: And provided also, That said draw Promo. shall be opened promptly upon reasonable signal for the passage of boats, vessels or other watercraft; Provided however, That no bridge or bridges shall be built under the provisions of this act except there also be built at the time of the erection of the piers, proper sheer-booms Sheer booms. or other proper protection to safely guide boats, vessels, rafts and other water crafts through said spans and at the expense of the city of Saint Pau], or of the persons or corporation constructing, owning, or operabing said bridge SEC 3 That any bridge or bridges constructed under this act and ao- Declared v, lawcording to its provisions and conditions shall be a lawful structure or ful ¤¤'¤°WfQ- f structures, over which may be transmitted the mails, troops, and the m:;r‘;“:]$;€;°2t: munitions of war of the United States free of charge; and the United fm., 0}- chu,,g{,_ " States shall have the right of way for zi postal telegraph and telephone Right of way forlines free of charge across said bridge or bridges, and may declare the l*°¤*¤}1*°l€gF¤Ph same to be a postal route. ‘1Y;x°;S;e;B:J;d_(’"° SEP. 4 That the structure or structures herein authorized shall be build and located under and subject to such regulations for the security of navigation of said river as the Secretary of War shall prescribe not however to be in any wise inconsistent with any of the provisions or conditions of this act; and to secure that object the said common council shall submit to the Secretary of \Vur, for his examination and P!¤p¤,¤>t¤.,t<>be approval, a. design and drawing of said bridge or bridges and other ‘:_g;’;"‘“?;lv`§‘;tS‘;:; accessory works provided for in this act and a map of the location, uppgvg ‘ giving, for the space of one mile above mid one mile below the proposed location., the topography of the hunks of the river, the shore-lines at high and low water, the direction and strength of the current ut all stages, and the soundings, accumtely showing the bed of the stream, theloczition of any other bridge or bridges and shall furnish such other intornmtion as shall be required for as full and satisfactory understanding of the subject; and until the said plan and location of the bridge
