l gird- of the bridge. Extending between the top chords of RIVER BRIDGE. ers, and the series of steel bents upon which the ele- In January last the Pennsylvania Steel Company, vated railroads will be carried. This portion of the who have the contract of the construction of the floor floor was… … sume when the whole load tudinal lines of plate-steel of the completed floor sys- girders of a little more than tem is hung on the sus- half the depth of the floor penders. The process of erec- beams. There are altogether twenty-three parallel relieving the bending stress on the floor beams, and…
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