e permanent character. may be compared to box girders placed on end. The neces- carrying one pair of girders, were run on to the bridge, and It was this liability to destruction, both from fire and decay sity for using wrought iron in these piers, as indeed in the the girders lifted from off them… … that led to a determination several years since to replaca that cast iron is an objectionable material for the purpose on, girders were lowered into their required position, each girder coming almost directly in line of the rails as previously laid. them all by iron structures. The partial…
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