East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Route 4, Bloomsburg, Columbia County, PA

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

41 b&w photos
14 data pages
3 photo caption pages

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TITLE:
East Bloomsburg Bridge, Spanning Susquehanna River at Pennsylvania Route 4, Bloomsburg, Columbia County, PA

CALL NUMBER:
HAER PA,19-BLOOM,1-

REPRODUCTION NUMBER:
[See Call Number]

MEDIUM:
Photo(s): 41 (4 x 5 in. and 8 x 10 in.)
Data Page(s): 13 plus cover page
Photo Caption Page(s): 3

DATE:
Documentation compiled after 1968.

CREATOR:
Historic American Engineering Record, creator

NOTE:
Survey number HAER PA-100

Building/structure dates: 1894 initial construction

Building/structure dates: 1914 subsequent work

Building/structure dates: 1924 subsequent work

Building/structure dates: 1954 subsequent work

Significance: The existing East Bloomsburg Bridge consists of six equal pin-connected through-truss spans of 190 foot length with two feet between end bearings at the piers for a total length of 1150 feet. The truss spans are of the "Pennsylvania" (Petit) type with 10 equal panels of 19 feet each. The truss members are made of steel and wrought iron, and the pins were made of steel. The significance of the structure is twofold; one, that it was constructed prior to 1900 and, two, that it was built by the King Bridge Company, one of the most important truss bridge manufacturing companies in the United States in the 19th century. The bridge also exhibits a high degree of its original integrity.

SUBJECTS:
PENNSYLVANIA--Columbia County--Bloomsburg
civil engineering
truss bridges

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.pa1737

CONTENTS:
Photograph caption(s):
1. VIEW, LOOKING SOUTHWEST, SHOWING EAST LONGITUDINAL ELEVATION OF FULL SIX SPANS
2. VIEW, LOOKING SOUTHEAST, SHOWING WEST LONGITUDINAL ELEVATION OF FULL SIX SPANS
3. VIEW, LOOKING SOUTHEAST, SHOWING WEST LONGITUDINAL ELEVATION OF NORTH END SPAN
4. VIEW, LOOKING SOUTHWEST, SHOWING SPAN 2 AND PIERS 1 AND 2
5. VIEW, LOOKING SOUTHEAST, SHOWING SPAN 5 AND PIERS 4 AND 5
6. VIEW, LOOKING SOUTHEAST, SHOWING NORTH ABUTMENT
7. VIEW, LOOKING NORTHWEST, SHOWING NORTH ABUTMENT
8. VIEW, LOOKING SOUTHWEST, SHOWING NORTH END SPAN, SIDE AND FLOOR SYSTEM
9. VIEW, LOOKING SOUTH, SHOWING PIER 5 AND TRUSS FLOOR SYSTEM
10. VIEW OF NORTH END SPAN, SHOWING FLOOR BEAM AND STRINGERS AT PANEL POINT L1
11. VIEW, LOOKING NORTHEAST, SHOWING SOUTH END SPAN, WEST SIDE, AT FLOOR LEVEL
12. VIEW, LOOKING SOUTH, SHOWING END PORTAL OF NORTH END SPAN
13. VIEW, LOOKING NORTH, SHOWING END PORTAL OF SOUTH END SPAN
14. DETAIL VIEW OF COMMEMORATIVE PLAQUE AND FINIAL, NORTH END SPAN
15. VIEW OF SOUTH END SPAN, SHOWING SWAY BRACING FRAME AT PANEL POINTS 2 AND 4, TOP LATERAL BRACING
16. DETAIL VIEW OF BEARING AT PANEL POINT L0, SOUTH END SPAN
17. DETAIL VIEW OF BEARINGS AT PANEL POINT L0, PIER 1
18. DETAIL VIEW OF BEARINGS AT PANEL POINT L0, PIER 5
19. DETAIL VIEW OF PANEL POINT M3, SOUTH END SPAN
20. DETAIL VIEW OF PANEL POINT M5, SOUTH END SPAN
21. DETAIL VIEW OF PANEL POINT U1 AT FINIAL, NORTH END SPAN
22. DETAIL VIEW OF PANEL POINT U3, SOUTH END SPAN
23. DETAIL VIEW OF PANEL POINT U4, SOUTH END SPAN
24. WEST SIDE DETAIL VIEW OF PANEL POINT L1, SOUTH END SPAN
25. DETAIL VIEW OF COMMEMORATIVE NAMEPLATE PLAQUE, NORTH END SPAN
26. DETAIL VIEW OF PLAQUE COMMEMORATING 1914 REFLOORING
27. VIEW, LOOKING SOUTHWEST, SHOWING FLOOD GAUGE STATION AT NORTHEAST CORNER OF BRIDGE
28. TRUSS MEMBER DETAILS AND ELEVATION OF BRIDGE
29. TRUSS MEMBER SHOP DETAILS, SHEET 2 OF 5
30. TRUSS MEMBER SHOP DETAILS, SHEET 3 OF 5
31. END PORTAL SHOP DETAILS, SHEET 5 OF 5
32. SOUTH ABUTMENT AND WINGWALL DETAILS
33. DETAILS OF COFFERDAM FOR PIER 1 TO BE FOUNDED ON ROCK
34. DETAILS OF CAISSON FOR PIERS 2, 3, 4 AND 5 TO BE BUILT ON SOIL OVERBURDEN
35. PIER 1 DETAILS
36. PIER 2 DETAILS
37. PIER 3 DETAILS
38. PIER 4 DETAILS
39. PIER 5 DETAILS
40. NORTH ABUTMENT AND WINGWALL DETAILS
41. 1928 REPAIRS AND ADDITIONS TO FLOOR SYSTEM AND PLAN AND ELEVATION OF BRIDGE

CONTROL #:
PA1737

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