with a the centers of the end pins. tube about 0'4 inch thick; This span is-connected to the at a depth of 230 feet the cliff on either side by a trussed bore was reduced to 8J^ inches span 115 feet in length. One diameter, and thus continued end of each shore span is for 351 feet. At this point… … to an average augmentation of longitudinal steel stringers, NEW STEEL ARCH BRIDGE OVER NIAGARA RIVER. of heat of 1° C. for every placed about 11 feet apart, 34-14 m. of depth, or 1° Fah. and transverse beams. The for every 63 feet. These figures differ slightly from those International Bridge…
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