H. DURATION OF EACH STAGE. This table shows the number of days in each year during which there were not less than the following heights above low-water. NAMES AND DIMENSIONS OF SOME OF THE LARGEST BOATS EMPLOYED ON THE MISSIS. SIPPI RIVER, AND WHICH PASS THE CITY OF ST. LOUIS, MO. Great Republic, not in port, higher than that of any on this list, and runs to sugar-refinery and eleva. tor above the bridge. Crescent City, Mary Alice, and Bee, not in port, are as high as, and two of them are higher than, those given in the above list. Ferry-boat East St. Louis. Height of pilot-house above water Ft. In. 40 2 80 6 Belleville, Cahokia, Charles Mulliken, Edwardsville, Ed. C. Wiggins, Louis V. Bogy, S. C. Christy, Springfield, America, Bunker Hill, Lavina Marie, and Submarine, No. 13, are near or about the same measurement as the East St. Louis. JAMES MCCORD, Secretary of Boatman's Association of St. Louis, Mo. Supplementary report of Board of Engineers. ENGINEER OFFICE, UNITED STATES ARMY, St. Louis, Mo., January 31, 1874. GENERAL: The Board of engineer officers constituted, by Special Orders No. 169, dated War Department, Adjutant-General's Office, Washington, D. C., August 20, 1873, to examine and report upon the Illinois and St. Louis Bridge across the Mississippi River, at St. Louis, Mo., having been reconvened by its president, under instructions from the Chief of Engineers, United States Army, dated November 25, 1873, met at St. Louis, Mo., January 14, 1874, to consider and report upon the survey and estimates made in pursuance of the recommendation of the Board in their previous report and also to consider and report upon certain documents submitted to them by the Chief of Engineers, United States Army, under date of December 30, 1873. These documents consisted of a review of the previous report of the Board by Mr. James B. Eads, chief engineer of the Illinois and St. Louis Bridge; and of two affidavits made by William Taussig, chairman of the executive committee of the bridge company, and John W. Noble, its attorney, setting forth that, in the investigation made by the Board at its first meeting, the bridge company had been unfairly treated. The Board were also directed by the Chief of Engineers, United States Army, under date of January 10, 1874, to investigate and explain certain discrepancies between the official report of the Board as received at the War Department, and the copy of the same published by the St. Louis papers and quoted by Mr. Eads in the review already mentioned. Having performed the duties assigned them, the Board have the honor to submit herewith their report, to which are appended the fol lowing maps and documents: Length over all. Width over all. LIST OF APPENDIXES. A. Map showing the cut around the last abutment of the Illinois and St. Louis Bridge over the Mississippi River, at St. Louis, Mo., as proposed by the Board of United States engineer officers, convened by Special Orders No. 169, dated War Department, Adjutant-General's Office, Washington, D. C., August 20, 1873. B 1. Letter of Wm. Taussig, chairman of the executive committee of the Illinois and St. Louis Bridge Company, to the honorable Secretary of War, dated December 19, 1873, inclosing affidavits, &c. (The three following documents were inclosed in the above.) B 2. Review of the first report of the Board by Jas. B. Eads, chief engineer Illinois and St. Louis Bridge. (The appendix to this review is omitted.) B 3. Affidavit of John W. Noble, addressed to the honorable Secretary of War. C. Personal statement of Col. J. H. Simpson, Corps of Engineers, senior member of the Board. D. Personal statement of Maj. G. K. Warren, Corps of Engineers. E. Letter addressed by the Board to Mr. Eads, dated January 14, 1874. F. Reply by Mr. Eads to the above letter, dated January 15, 1874. PLANS AND ESTIMATES. The plan sketched by the Board in their first report contemplated a canal, or rather an open cut, behind the east abutment of the bridge, giving a clear width of water-way of 120 feet at the abutment; the shore-side of this cut to be laid out on an easy curve, joining the general shore-line about 500 feet above, and 300 feet below the bridge; the river-side to be entirely open, but the shore-side to be revetted vertically with stone or crib work to a height of 5 feet above extreme high water; this wall to be provided with ring-bolts and posts, to enable boats to work through the cut with lines; finally to span the opening thus formed by a draw-bridge, giving a clear span of 120 feet in width. The survey made in accordance with the recommendation of the Board developed the necessity for several modifications, which are set forth in the accompanying map, (Appendix A.) equal distance below the St. The shore side The cut, as shown, is 1,400 feet long, extending an above and below the bridge. The bottom is 40 feet Louis City directrix, or 6 feet below extreme low water. has a slope of one horizontal to one vertical, and is paved with stone, the foot of the slope being secured by sheet-piling. The pivot pier rests on a square bed of concrete, with piles underneath, the area covered by the concrete being inclosed by sheet-piling. The draw-span is 308 feet long, one end resting on the east abutment, and the other on a new pier built on Front street, in East St. Louis. A combination of wooden cribs, filled with stone and floats, rising and falling with the water-surface, is designed to prevent boats from coming in contact with the draw when opened. Finally, ring-bolts on the levee-slope, and attached to the cribs, are designed to enable boats to work through the cut with lines. Land damage: ESTIMATE. 1,400 linear feet river-front, less 100 feet owned by bridge company, 1,300 feet, at $300. $390,000 00 Removing present approaches : Taking down masonry of present eastern approach, 10,624 cubic yards masonry, at $3 $32,052 00 Removing foundation of eastern approach, four caissons, at $1,000. 4,000 00 Foundation tower-pier.. 2,000 00 38,052 00 |