Describes how Union Pacific replaces Howe trusses in Columbia River Bridge; new bridge consists of three 192-ft. through trusses, three 242-ft. through trusses, three 90-ft. through plate girders, 280-ft. center bearing swing span, 304-ft and 418-ft. trestle approaches.
Erecting seven simple spans without falsework
Ry. Age
Railway Age ; 77 , n 15
1924
3 pages
4 Figs.
Aufsatz (Zeitschrift)
Englisch
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