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Home > Iowa > Decorah vicinity > Freeport Bridge, Spanning Upper Iowa River, Decorah, Winneshiek County, IA



See 36 maps of this location


B&W Photos
Overall View Of Bridge And County Road
HB410887
Overall View Of Bridge And County Road 		Overall View Of Bridge And Upper Iowa River
HB410888
Overall View Of Bridge And Upper Iowa River 		West Web
HB410889
West Web 		West Web
HB410890
West Web
East Web
HB410891
East Web 		South Portal
HB410892
South Portal 		South Portal
HB410893
South Portal 		North Portal
HB410894
North Portal
East Web
HB410895
East Web 		East Web And North Portal
HB410896
East Web And North Portal 		West Web And South Portal
HB410897
West Web And South Portal 		East Web And South Portal
HB410898
East Web And South Portal
West Web And North Portal
HB410899
West Web And North Portal 		West Web Detail, Showing Upper And Lower Chord Connections
HB410900
West Web Detail, Showing Upper And Lower Chord Connections 		East Web Detail, Showing Upper And Lower Chord Connections
HB410901
East Web Detail, Showing Upper And Lower Chord Connections 		West Web Detail, Showing Lower Chord Connections, Floor Beams And Underside Of Decking
HB410902
West Web Detail, Showing Lower Chord Connections, Floor Beams And Underside Of Decking
West Web Detail, Showing Lower Chord Connections And Floor Beams
HB410903
West Web Detail, Showing Lower Chord Connections And Floor Beams 		Deck / Vertical / Strut And Bracing Detail
HB410904
Deck / Vertical / Strut And Bracing Detail 		Deck / Vertical / Strut And Tubular Arch Detail
HB410905
Deck / Vertical / Strut And Tubular Arch Detail 		Strut Detail, Showing Portal Builder
HB410906
Strut Detail, Showing Portal Builder's Plate
West Web Detail, Showing Upper And Lower Chord Connections For Webbed Vertical (panel Point C)
HB410907
West Web Detail, Showing Upper And Lower Chord Connections For Webbed Vertical (panel Point C) 		West Web Detail, Showing Upper And Lower Chord Connections For Angle Vertical (panel Point B)
HB410908
West Web Detail, Showing Upper And Lower Chord Connections For Angle Vertical (panel Point B) 		Deck And Webbed Vertical Detail, Showing Lower Chord Connections
HB410909
Deck And Webbed Vertical Detail, Showing Lower Chord Connections 		North Abutment And Wingwall, Showing Bearing Shoe And Arch Skewback
HB410910
North Abutment And Wingwall, Showing Bearing Shoe And Arch Skewback
Bearing Shoe And Arch Skewback Detail (panel Point M)
HB410911
Bearing Shoe And Arch Skewback Detail (panel Point M) 		Lower Chord Connection Of Webbed Vertical (panel Point C) View To Northwest.
HB410912
Lower Chord Connection Of Webbed Vertical (panel Point C) View To Northwest. 		Lower Chord Connection Of Angle Vertical (panel Point B)
HB410913
Lower Chord Connection Of Angle Vertical (panel Point B) 		Lower Chord Connection Of Webbed Vertical (panel Point I)
HB410914
Lower Chord Connection Of Webbed Vertical (panel Point I)
Lower Chord Connection Of Angle Vertical (panel Point J)
HB410915
Lower Chord Connection Of Angle Vertical (panel Point J) 		Lower Chord Connection Of 1
HB410916
Lower Chord Connection Of 1' Square Vertical (panel Point H) 		Forged Eyebar Splice
HB410917
Forged Eyebar Splice 		Upper Chord Connection Of Webbed Vertical, Showing Cast Iron Skewbacks (panel Point C)
HB410918
Upper Chord Connection Of Webbed Vertical, Showing Cast Iron Skewbacks (panel Point C)
Upper Chord Connection Of Angle Vertical, Showing Cast Iron Skewbacks ([panel Point B)
HB410919
Upper Chord Connection Of Angle Vertical, Showing Cast Iron Skewbacks ([panel Point B) 		Eyebar Connector Plate
HB410920
Eyebar Connector Plate 		Upper Chord Connection Of Webbed Vertical (panel Point E)
HB410921
Upper Chord Connection Of Webbed Vertical (panel Point E) 		Upper Chord Connection Of Webbed Vertical At Midspan (panel Point G)
HB410922
Upper Chord Connection Of Webbed Vertical At Midspan (panel Point G)
Upper Chord Connection Of Angle Vertical (panel Point D)
HB410923
Upper Chord Connection Of Angle Vertical (panel Point D) 		Upper Chord Connection Of 1
HB410924
Upper Chord Connection Of 1' Square Vertical (panel Point F)


Data Pages


Drawings


Photo Caption Pages


Item Title


Location
Spanning Upper Iowa River, Decorah vicinity, IA

Find maps of Decorah, IA


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER IA-19
Building/structure dates: 1878 initial construction
National Register Number: 84001407
Significance: The Freeport Bridge is one of the few unaltered examples remaining of what had once been the standard rural roadway bridge type of the 1870s in America, the bowstring arch-truss. This patented tubular arch design was marketed extensively throughout the United States and Canada by the Wrought Iron Bridge company, one of America's most important 19th century iron bridge fabricators. Among the bowstrings currently identified in America, the Freeport Bridge is second in span length only to a 183.5-foot structure in Blue Earth County, Minnesota, built by the Wrought Iron Bridge Company in 1873.

Related Names
Winship, Winship
Wrought Iron Bridge Company Of Canton,Ohio


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. OVERALL VIEW OF BRIDGE AND COUNTY ROAD. VIEW TO SOUTH.
2. OVERALL VIEW OF BRIDGE AND UPPER IOWA RIVER. VIEW TO EAST.
3. WEST WEB. VIEW TO EAST.
4. WEST WEB. VIEW TO EAST.
5. EAST WEB. VIEW TO WEST.
6. SOUTH PORTAL. VIEW TO NORTH.
7. SOUTH PORTAL. VIEW TO NORTH.
8. NORTH PORTAL. VIEW TO SOUTH.
9. EAST WEB. VIEW TO SOUTHWEST.
10. EAST WEB AND NORTH PORTAL. VIEW TO SOUTHWEST.
11. WEST WEB AND SOUTH PORTAL. VIEW TO NORTHEAST.
12. EAST WEB AND SOUTH PORTAL. VIEW TO NORTHWEST.
13. WEST WEB AND NORTH PORTAL. VIEW TO SOUTHEAST.
14. WEST WEB DETAIL, SHOWING UPPER AND LOWER CHORD CONNECTIONS. VIEW TO NORTHEAST.
15. EAST WEB DETAIL, SHOWING UPPER AND LOWER CHORD CONNECTIONS. VIEW TO NORTHWEST.
16. WEST WEB DETAIL, SHOWING LOWER CHORD CONNECTIONS, FLOOR BEAMS AND UNDERSIDE OF DECKING. VIEW TO NORTHWEST.
17. WEST WEB DETAIL, SHOWING LOWER CHORD CONNECTIONS AND FLOOR BEAMS. VIEW TO NORTHWEST.
18. DECK / VERTICAL / STRUT AND BRACING DETAIL. VIEW TO SOUTH.
19. DECK / VERTICAL / STRUT AND TUBULAR ARCH DETAIL. VIEW TO SOUTH.
20. STRUT DETAIL, SHOWING PORTAL BUILDER'S PLATE. VIEW TO NORTH
21. WEST WEB DETAIL, SHOWING UPPER AND LOWER CHORD CONNECTIONS FOR WEBBED VERTICAL (PANEL POINT C). VIEW TO NORTHEAST.
22. WEST WEB DETAIL, SHOWING UPPER AND LOWER CHORD CONNECTIONS FOR ANGLE VERTICAL (PANEL POINT B). VIEW TO NORTHEAST.
23. DECK AND WEBBED VERTICAL DETAIL, SHOWING LOWER CHORD CONNECTIONS. VIEW TO NORTHEAST.
24. NORTH ABUTMENT AND WINGWALL, SHOWING BEARING SHOE AND ARCH SKEWBACK. VIEW TO EAST.
25. BEARING SHOE AND ARCH SKEWBACK DETAIL (PANEL POINT M). VIEW TO EAST.
26. LOWER CHORD CONNECTION OF WEBBED VERTICAL (PANEL POINT C) VIEW TO NORTHWEST.
27. LOWER CHORD CONNECTION OF ANGLE VERTICAL (PANEL POINT B). VIEW TO NORTHWEST.
28. LOWER CHORD CONNECTION OF WEBBED VERTICAL (PANEL POINT I). VIEW TO NORTHWEST.
29. LOWER CHORD CONNECTION OF ANGLE VERTICAL (PANEL POINT J). VIEW TO NORTHWEST.
30. LOWER CHORD CONNECTION OF 1' SQUARE VERTICAL (PANEL POINT H). VIEW TO NORTHWEST.
31. FORGED EYEBAR SPLICE. VIEW TO NORTHWEST.
32. UPPER CHORD CONNECTION OF WEBBED VERTICAL, SHOWING CAST IRON SKEWBACKS (PANEL POINT C). VIEW TO NORTHEAST.
33. UPPER CHORD CONNECTION OF ANGLE VERTICAL, SHOWING CAST IRON SKEWBACKS ([PANEL POINT B). VIEW TO NORTHEAST.
34. EYEBAR CONNECTOR PLATE. VIEW TO SOUTHWEST.
35. UPPER CHORD CONNECTION OF WEBBED VERTICAL (PANEL POINT E). VIEW TO SOUTHEAST.
36. UPPER CHORD CONNECTION OF WEBBED VERTICAL AT MIDSPAN (PANEL POINT G). VIEW TO SOUTHEAST.
37. UPPER CHORD CONNECTION OF ANGLE VERTICAL (PANEL POINT D). VIEW TO SOUTHEAST.
38. UPPER CHORD CONNECTION OF 1' SQUARE VERTICAL (PANEL POINT F). VIEW TO SOUTHEAST.


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