Main 350-ft. ribs of new highway bridge at Oregon City, Ore., swung into place by means of cables of bridge being replaced; other erection-method studies.
Old suspension bridge used in erecting new arch
Eng. News-Rec
Engineering News-Record ; 89 , n 18
1922
4 pages
5 Figs.
Aufsatz (Zeitschrift)
Englisch
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