FIFTIETH CONGRESS. Sess. I. Ch. 137. 1888. 89 tion over the highways leading to said bridge; and it shall enjoy the rights and privileges of other post-routes in the United States, and equal privi eges in the use of said bridge shall be granted to all telegraph companies, and the United States shall have the right of way across said bridge and its approaches for postal-telegraph purposes. Sec. 3. That if said bridge shall be made with unbroken and con- SP*=*¤S· tinuous spans, the two main spans thereof shall be over the main channels of the river, and not less than three hundred feet each in length in the clear, and the remaining spans shall not be less than two hundred feet each in length in the clear. The lowest part of the superstructure of the south span of said bridge shall not be less than one hundred feet and the remaining spans not less than ninety feet above low-water mark, as understood at the point of location, and the bridge shall be at right angles to and its piers parallel to the Cl11`I°€I1l5 of the river : Provided, That if any bridge built under Pmvisos. this act shall be constructed as a pivot draw-bridge, its draw shall Draw. be over the main channel at an accessible and the best navigable point, and with spans giving a clear water·way, measured at the owest stage of water known at the localit , of not less than one hundred and sixty feet in the clear on each side of the central or pivot pier of the draw ; the main unbroken span of the bridge shall not be less than three hundred feet in the clear, and the res maining spans not less than two hundred feet each in the clear, and the lowest part of the superstructure of all the principal spans shall not be less than sevent -five feet above low-water mark, as understood at the point of location, and the piers of said bridge shall be parallel to, and the bridge itself at rig t angles to the current of the river : Provided, That said draw shall be opened prom tly upon reasonable signals for the passage of boats or vessels ; andp said corporation shal maintain at its own expense, from sunset to sunrise, such light or other signals as the Light-House Board shall prescribe. Lights SEo. 4. That any bridge authorized to be constructed under this wmwmwuw act shall be built and located under and subject to such regulations °p*”°v°p °“* for the security of the 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 the bridge, and a map of the location, giving, for the space of one mile above and one mile below the proposed ocation, the topography of the banks of the river, the shore lines at high and low water, the direction and strength of the current at all stagles, and the soundingls, accurately showing the bed of the stream, the location of any other bridge or bridges, and shall furnish such other information as may be required for a full and satisfactory understanding of the subject; and until said plan and location of the bridge are approved by the Secretary of \\ ar the bridge shall not be bni t; and should any change be made in the plans of said bridge during the progress of construct-ion, such change shall be subject to the approval of the Secretary of `War. Said company shall be allowed to c arge reasonable tolls for transit Tous. over said bridge, but the Secretary of War shall have the right from time to time to revise, prescribe, and determine such rates or tolls. Sec. 5. The right to alter, amend, or repeal this act so as to pre- Ameuammmeuc. vent or remove all material and substantial obstructions to the navigation of said river by the construction of said bridge is hereby expressly reserved; and any alteration or change that may be required by the Secretary of War in the bridge constructed under this act, or the entire removal thereof, shall be made by the corporation or party owning or controlling the same at its own expense. If any litigation shall be necessary for the purpose of enforcing the require- Litigation. ments of the War Department as to altering said bridge or removing the whole structure, the same shall be had in the circuit court of
