Mowry, William Augustus, 1829-1917, Mowry, Arthur May, 1862- joint author · New York, Boston [etc.] Silver, Burdett and company · leaf 242
its proposed span of three thousand feet,these other great bridges will be small in comparison. Our bridges are mostly of steel rather than wood nowa-days, he continued. Since the Portage viaduct on theErie road, which was eight hundred feet long and two hun-dred and thirty feet above the river,… … BROOKLYN BRIDGE. 240 AMERICAN INVENTIONS AND INVENTORS. shorter bridges as well as on these enormotis structures. Irontowers were put in place of stone towers, and iron beams inplace of wooden ones, at the Niagara Suspension Bridge,without interfering with the trains. I read the other dayhow a new…
Inventions
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