Page:United States Statutes at Large Volume 22.djvu/442

 FORTYSEVENTH CONGRESS. Sess. H. Ch. 44. 1883. 415 titled "An act to authorize the construction of bridges across the Ohio River, and to prescribe the dimensions of the same," shall be, and the same is hereby, amended by striking out sections two and four of said act and substituting therefor the following: shall have its axis at right angles to the current at all stages, and all of A-*¤°¤d°*l· its swans slaall be thlgpxugh spar;? tEve;·ytsue1h bridge shall have at least Construction. one c anne -span p e over a par o the river usua y run by dcsceudiug coal-fleets, said channel-span to 've a clear water-way between the piers of five hundred feet, measure? on the low-water line. Said channel-span shall be at least forty feet above local highest .water, measured to the lowest part of the span, and shall be at least ninety feet above low water in bridges built above the mouth of the Big Sandy River, and at least one hundred feet above low water in bridges built below the mouth of the Big Sandy River, measured to the lowest part of the span: Provided, however, That all bridges over the Ohio River Province. below the Covington and Cincinnati suspension bridge shall have, in addition to the channel-span prescribed above, a pivot—draw giving two clear openings of one hundred and sixty feet each, measured at right angles to the current at high stages, and located in a part of the bridge that can be safely and conveniently reached at such stages; that said draw shall be provided with suitable rest-piers above and below the pivot·pier, and suitable floats or crib-work connecting said rest-piers with the pivot—pier, to enable boats to pass through said draw with safety· that in case said draw span is near either shore, the bridge company, by pulrchaseuplr orthervgseilshall extinguish the right of mooping ts or other wa the adjacent s ore or a istance o at least seven hundred feet above and seven hundred feet below the bridge · and that said draw shall be opened promptly, upon reasonable signal, for the passage of boats whose construction shall not be such as to admit of their passage under the stationary spans of said bridge, except when trains are passing over the same; but in no case shall unnecessary delay occur in opening said draw before or after the passage of a train : Provided, further, That in lieu of the high draw prescribed above, bridges over the Ohio River below the Covington and Cincinnati sus- ' pension bridge may be built as continuous bridges, with a clear height of fifty- three feet aboye local highest water, measured to the lowest part of the channel-span. "SEc. 4.—That any person, company, or corporation authorized to _ Plan and locaconstruct a bridge across the Chip River shag give répitiee, by putblicar {3******8 "°*?.l:_;°"3 tion for one week in new: papers aving a wi e circu 'on, in no ess M_ than two news apers in the cities of Pittsburgh, Cincinnati, and Louisville for bridgeg above the mouth of the Big Sandy, and in the cities of ‘ ‘ Pittsburgh, Cincinnati, Louisville, Saint Louis, Memphis, and New Orleans for bridges below the mouth of the Big Sandy, and shall submit to the Secretary of War, for his examination, a design and drawings of the bridge andlpiebrs), and 25 map offheagpeatipln, giving, mrlgemgf _ atl tonem'ea vean onemxe ow epropose a, e topocgaphy of the hunks of the river and the shore lines at high and low water. This map shall be accompanied by others, drawn on the scale of one indh to tiwcix hundred feet,_giving,({or a we of pntel a 'le above the ine o the roposed r1 ge an a qu. r - lglw, an accurate representgtion of the bottom of the river, by contour lines two feet apart, determined by accurate soundmgs, and also showing over the wholelwidth 1; thi: of the I'lV€5‘ tahtelféogste ::2 dgrtiatgrs g u ntsat owwa ra w wa r,an - galgesfagg by triangulated dbservations on suitable floats. The maps shall also show the locations of other bridges in the vicinity, and shall give such other information as the Secretary of War may require for a full and satisfactory understanding of the_ subject. Said_ maps and drawings shall be referred to a board of engineers for examination and report, which board shall personally examine the site of the proposed
 * ‘bEc 2. That every_bridge hereafter erected across the Ohio River Stat., 17, sos.