8, to the middle truss, C D, of 316 feet, and of the two end or side directory of the Illinois and St. Louis Bridge Company, that stoning from underneath by tension, in place of above or trusses, A Cand B D, each 296 feet long, in all 908 feet. overhead by compression. it is idle to talk about… … The anchorage is the first work begun in carrying the plan may be suspended from the trussing above, and through The clear span between the bottom or compression chords. foot of arches is 680 feet. The end trusses, resting on arches, are next that below, the straight chords. chain which is under…
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