Historic Photographs

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Item Title


Location
Spanning Great Miami River at bypassed section of, Troy vicinity, OH

Find maps of Troy, OH


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER OH-122
Unprocessed field note material exists for this structure (N990).
Building/structure dates: 1860 initial construction
Building/structure dates: 1922 subsequent work
Building/structure dates: 1936 subsequent work
Building/structure dates: 1940 subsequent work
Building/structure dates: 1967 subsequent work
Building/structure dates: 1976 subsequent work
Significance: Eldean Bridge is one of the best surviving examples of a Long truss, patented by Col. Stephen H. Long in 1830. Long was the first American engineer to apply the concept of driving wedges into the connections to prestress the structure, ensuring that the members functioned efficiently.

Subjects
Covered Bridges
Transportation


Related Names
Hamilton, James
Hamilton, William
Long, Col. Stephen H.


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
PERSPECTIVE VIEW, LOOKING SOUTHWEST.
EAST ELEVATION.
PERSPECTIVE OF SOUTH FACE FROM EAST BANK OF RIVER.
ELEVATION FROM MIDDLE OF STREAM BED.
UNDERSIDE VIEW SHOWING DECK TRACING AND LOWER CHORD SPLICING.
WESTERN ABUTMENT.
LOWER CHORD DETAIL WITH ABUTMENT, LOOKING SOUTH.
PERSPECTIVE FROM STREAM BED, SOUTH SOUTHWEST.
WESTERN PORTAL IN OBLIQUE PERSPECTIVE.
VERTICAL AND DIAGONAL ENDPOSTS AT EAST PORTAL.
DETAIL OF TOP CHORD JUNCTION, THIRD VERTICAL IN FROM EAST PORTAL.
MIDSPAN VIEW, LOOKING EAST THROUGH EASTERN HALF OF SPAN.
PANEL DETAILS TO LEFT OF CENTER POST.
DETAIL OF CENTER SPAN PANEL, SOUTH TRUSS.
PERSPECTIVE, LOOKING SOUTHWEST.
PERSPECTIVE FROM STREAM BED, SOUTH SOUTHWEST.


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