Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 332
Sept.. 1922.] Bridges Old and New. 317 of 400 feet span. Since then the building of suspension bridgeshas made great progress and now they are recognized as the best-known form of construction for very long spans. Everyone isfamiliar with the New York bridges which are the longest sus-pension spans… … Foot-bridge near Lake Izabal, Guatemala. until the thirteenth century. Cast iron, strange to say, camestill later, but was the first to be used in metal bridges. AbrahamDarby is credited with having built the first cast-iron bridge.In 1779 he completed the well-known bridge at Coobrookdale,England.…
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