Slates' Mill Bridge, Township Road 439 spanning South Branch of Tunkhan, Lackawanna State Park, Lackawanna County, PA

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Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey

11 b&w photos
10 data pages
1 photo caption pages

TITLE:
Slates' Mill Bridge, Township Road 439 spanning South Branch of Tunkhan, Lackawanna State Park, Lackawanna County, PA

CALL NUMBER:
HAER PA-615

REPRODUCTION NUMBER:
[See Call Number]

MEDIUM:
Photo(s): 11 (5 x 7)
Data Page(s): 9 plus cover page
Photo Caption Page(s): 1

DATE:
Documentation compiled after 1968.

CREATOR:
Historic American Engineering Record, creator

NOTE:
Survey number HAER PA-615

Unprocessed field note material exists for this structure (N919).

Building/structure dates: 1885 initial construction

Significance: The Slates' Mill Bridge spanning the South Branch of Tunkhannock Creek typifies the Pratt through truss for moderate spans in rural contexts constructed during the 1880s by the King Iron Bridge Company. It marks the site of rural industry that has disappeared due to profound changes in land use. Although the King Iron Bridge Company erected thousands of these metal truss bridges in such contexts, a small percentage survive. Despite its present state of deterioration, it remains basically unaltered and retains much of its original decoration. It is an excellent example of an endangered bridge that could be rehabilitated for pedestrian use as a public amenity in a state recreational facility.

SUBJECTS:
PENNSYLVANIA--Lackawanna County--Lackawanna State Park

OTHER TITLE:
Tunkhannock Creek Bridge

COLLECTION:
Historic American Engineering Record (Library of Congress)

REPOSITORY:
Library of Congress, Prints and Photograph Division, Washington, D.C. 20540 USA

DIGID:
http://hdl.loc.gov/loc.pnp/hhh.pa3982

CONTENTS:
Photograph caption(s):
1. AERIAL VIEW FROM SE LOOKING NW, SHOWING BRIDGE AND SITE CONTEXT
2. AERIAL VIEW USING TELEPHOTO LENS FROM SE LOOKING NW.
3. SE UPSTREAM ELEVATION.
4. PERSPECTIVE FROM EAST OF UPSTREAM SIDE. NOTE PORTAL FINIALS.
5. EAST PORTAL ELEVATION.
6. INTERIOR VIEW, NE, OF PANELS AND INCLINED END POST SHOWING DIAGONAL BRACING IN UPPER CHORD AND DIAGONALS IN PANELS.
7. DETAIL OF INCLINED END POST WITH PIN CONNECTION, EYEBARS AND LATICE PORTAL BRACE. FINIAL DETAILS SEEN ATOP.
8. DETAIL OF PIN CONNECTION AND LATTICED CHANNEL VERTICAL AND LATERAL MEMBERS.
9. VIEW OF UNDERSIDE, LOOKING W, DECK BEAMS, DECKING, AND ABUTMENT CONSTRUCTED OF UNDRESSED LOCAL STONE.
10. WEST PORTAL VIEWED FROM APPROACH ROAD.
11. DETAIL OF FINIAL WITH RAISED DOTS AND SURMOUNTED BY SMALL SPHERE AND EYEBAR CONNECTION OF INCLINED END POST.

CONTROL #:
PA3982

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