... in the chasm, was finally adopted. GENERALDESCRIPTION. Thelength of the bridge is2,584 feet between theabutments (Figs. 1, Plate l), andis approached a t each end by a high embankment. It consists of t'en 180-foot deck-spans andthree 240-foot through-spanssupported on solid concrete piers andabutments...

..., in order to find the distribution of the load throughout the cast-iron arch-ribs, wrought-iron ties, and the subsidiary cast-iron parts of the superstructure. One. bridge of wrought iron built-uptroughing and one of rolled steel joists and deck-plates were tested in order to find the distribution...

... of 45 feet below ordinarylow-water level. The deck of the pier consists of reinforcedconcretesupported by pre- castreinforced-concrete trusses, which are carried on rows of rein- forced-concretecylinders resting onrockbottom.Therearefour rows of thesecylinders a t each side of the pier at the innerend...