Brief historical account of the various bridges built at this point and the disasters to the structures. (700 w.)
Rebuilding of the Pennsylvania railroad bridge at Columbia, Pa.
Ry Rev
1897
Article (Journal)
English
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Rebuilding railroad bridge piers under traffic
Engineering Index Backfile | 1929
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Engineering Index Backfile | 1904
The Pennsylvania railroad tunnel bridge
Engineering Index Backfile | 1902
Pennsylvania railroad bridge at Phoenixville
Engineering Index Backfile | 1916
Rebuilding Moffat Railroad, U.S.A.
Engineering Index Backfile | 1938