Skinner, Frank W. (Frank Woodward), 1858-1932 · New York, McGraw · leaf 261
or the increased dead and live loads ofa single track. All of the towers and masonry except one abut-ment were, therefore, retained, and the reconstruction consisted 244 Bridge construction in the replacement of the old track, floor system, girders, andtrusses by new spans supported on the old… … apart on centers which rested directly on the top flanges of the oldgirders and the top chords of the old trusses. The new structurewas designed entirely to facilitate its substitution for the oldspans without interrupting the regular train service, and the VIADUCTS 245 f;^naHfod Width of the old…
Bridges
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