A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Changing railroad bridges in midstream
Progress in construction of $18 million double lift bridge over Harlem River to replace 63-yr old swing structure; difficulty was that new bridge had to be built almost directly atop old one, its construction schedule keyed to elaborate plan for shifting tracks while keeping old bridge in operation; 4-track structure supported by steel towers carrying lift mechanism each 218 ft high; length of structure, 1780 ft.
Changing railroad bridges in midstream
Progress in construction of $18 million double lift bridge over Harlem River to replace 63-yr old swing structure; difficulty was that new bridge had to be built almost directly atop old one, its construction schedule keyed to elaborate plan for shifting tracks while keeping old bridge in operation; 4-track structure supported by steel towers carrying lift mechanism each 218 ft high; length of structure, 1780 ft.
Changing railroad bridges in midstream
Eng News-Rec
Engineering News-Record ; 155
1955
6 pages
Article (Journal)
English
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