Design of arch span bridging Grand Canyon of Colorado at Lee's Ferry; three-hinged deck arch, with span of 616 ft. and rise of 90 ft.; excavations; steel hauling; erection; final adjustments. (See also Highway Mag vol. 20, no. 1, Jan. 1929 pp. 19-21, 3 figs)
America's greatest travel barrier is again bridged
Professional Engr
Professional Engineer ; 14 , n 1
1929
2 pages
1 Fig.
Article (Journal)
English
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America's greatest travel barrier is again bridged
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