Skinner, Frank W. (Frank Woodward), 1858-1932 · New York, McGraw · leaf 218
GS 20I Boone. — The double-track Boone viaduct carries the Chicago& Northwestern Railway across the Des Moines River, and hastwenty-one 75-ft. plate girder spans supported on thirty towers.The longitudinal tower girders are seated directly on the towercaps and on the double-web transverse… … izk%irPi Planed ioi Sole PI- /9*-| VlOS/offed.Slots Zl/l0k y ^ UJ t_l > SM/ / ||l I, t ■ LJ I ■ III ^1 1 Cast-S+eel Fedes+ols for38-Fbot Deck Spans. - Holas.- (-- - — — IlO ,1111 ^ r ^ 1 ^-—,0 — ^-i J- 111 Des Moines River Viaduct. ing a seat for the connecting girders. These are the samedepth…
Bridges
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