Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 314
dge over theDanube just below the Iron Gate was in his time a gigantic under-taking. It was built probably about 104 a.d. (Fig. 8). Its engi-neer was Apollodorus of Damascus, who also built the TrajanColumn in Rome, on which there is a bas-relief of the bridsre Sept., 1922.] Bridges Old and New.… … Natural bridge at Han-tseuen, China. 170 feet. The bas-relief gives clear information that the stonepiers were connected by wooden arches. There are still thirteenpiers visible out of the twenty. The length of this remarkablestructure is said to have been 3900 feet (Murrays Handbook), 300 Ralph…
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