Kaibab Trail Suspension Bridge, Spanning Colorado River, Grand Canyon National Park, Coconino County, AZ

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

30 b&w photos
14 data pages
2 photo caption pages

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TITLE:
Kaibab Trail Suspension Bridge, Spanning Colorado River, Grand Canyon National Park, Coconino County, AZ

CALL NUMBER:
HAER ARIZ,3-GRACAN,3-

REPRODUCTION NUMBER:
[See Call Number]

MEDIUM:
Photo(s): 30 (4 x 5 in.)
Data Page(s): 13 plus cover page
Photo Caption Page(s): 2

DATE:
Documentation compiled after 1968.

CREATOR:
Historic American Engineering Record, creator

NOTE:
Survey number HAER AZ-1

Building/structure dates: 1928 initial construction

Significance: This is the site of the first bridge crossing of the Colorado River within the Grand Canyon National Park. It comprises an excellent example of an early 20th century suspension bridge designed for light traffic loads.

SUBJECTS:
ARIZONA--Coconino County--Grand Canyon National Park
suspension bridges
pedestrian bridges
bridge construction

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.az0048

CONTENTS:
Photograph caption(s):
1. VIEW OF COMPLETED BRIDGE LOOKING TOWARD NORTH ABUTMENT
2. COMPLETED STRUCTURE SHOWING TUNNEL AT SOUTH APPROACH
3. VIEW LOOKING ALONG BRIDGE TOWARD TUNNEL OF SOUTH APPROACH. MAIN CABLE TUNNELS ALSO SHOWN
4. PACK TRAIN WAITING TO BE UNLOADED AT FOOT OF YAKI TRAIL. APPROXIMATELY TWO-AND-ONE-HALF TONS OF STEEL ON ANIMALS SHOWN. NOTE COIL OF 1-1/2' WIND CABLE IN FOREGROUND.
5. VIEW OF STORAGE YARD SHOWING PACK TRAIN BEING UNLOADED
6. COMPRESSOR AT SOUTH RIM OF TONTO PLATEAU BEING TAKEN DOWN TRAIL TO THE BRIDGE BY HAND
7. SHOWING METHOD OF SLEDDING WIND CABLE DOWN YAKI TRAIL TO THE BRIDGE, WEIGHT OF CABLE AND DRUM APPROXIMATELY 2200 POUNDS
8. VIEW SHOWING 'GO-DEVIL' USED IN SLEDDING WIND CABLE TO BRIDGE
9. VIEW SHOWING OLD KAIBAB SUSPENSION BRIDGE
10. EXCAVATION IN ROSE GRANITE FOR NORTH UPSTREAM CABLE ANCHOR
11. SOUTH ANCHORAGES OF MAIN CABLE
12. DRILLING IN ROSE GRANITE FOR NORTH UPSTREAM CABLE ANCHOR
13. VIEW OF STORAGE YARD AND ASSEMBLING PLATFORM. BLACKSMITH SHOP UNDER CANVAS FLY IN RIGHT FOREGROUND
14. RIVETING TRANSOMS IN STORAGE YARD, SOUTH OF SOUTH PORTAL OF TUNNEL
15. TUNNEL WORKERS AT SOUTH PORTAL OF TUNNEL. NOTE RESPIRATORS AND GOGGLES. AIR LINE FROM COMPRESSOR IN FOREGROUND
16. RIGGER ASTRIDE 7/8' CABLE MAKING HITCH TO HAUL UP MAIN CABLE
17. PULLING UP NEW CABLE BY MEANS OF 30-TON STUMP PULLER
18. LAYING OFF MAIN CABLES FOR HANGERS
19. UNLOADING CONCRETE FROM SKIP INTO SOUTH CABLE ANCHOR FORM
20. VIEW AT SOUTH PORTAL OF TUNNEL SHOWING COMPRESSOR, AIR HOIST, CONCRETE SKIP, HIGH LINE TO SOUTH CABLE ANCHOR DEADMAN AND ROCK FILL FOR SOUTH APPROACH TRAIL
21. SHOWING TRANSOM AND HANGER ASSEMBLY. VIEW LOOKING NORTH
22. TRANSPORTING STEEL FLOOR PLATES ON HAND CART TO NORTH END OF BRIDGE. NOTE RETAINING ANGLE FOR SURFACING AT CUT-SIDE EDGE OF FLOOR PLATES. NOTE TUNNELS IN TOP OF ROCK FACE FOR MAIN CABLES
23. TRANSPORTING LAST STRINGER AND INTERMEDIATE FLOOR BEAM ASSEMBLY TO NORTH END OF BRIDGE ON HAND CART
24. SOUTH UPSTREAM WIND CABLE ANCHOR. NOTE METHOD OF REACHING ANCHORAGE
25. VIEW SHOWING RELATIVE LOCATION OF OLD AND NEW CABLE SYSTEMS AT NORTH CABLE SUPPORT
26. NEW STEEL BRIDGE COMPLETED ASSEMBLED. OLD BRIDGE BELOW. U.S.G.S. GAGING STATION IN RIGHT BACKGROUND. VIEW LOOKING NORTHEAST
27. PHOTOCOPY OF HISTORIC DRAWING, GENERAL ELEVATION INCLUDING TRUSS DETAILS. K.A. Kitterdge, Chief Engineer, February 1928
28. PHOTOCOPY OF HISTORIC DRAWING, DETAIL OF SUPPORT FOUNDATION. K. A. Kitterdge, Chief Engineer, February 1928
29. PHOTOCOPY OF HISTORIC DRAWING, DETAIL OF SEAT FOR CABLES. K. A. Kitterdge, Chief Engineer, February 1928
30. PHOTOCOPY OF HISTORIC DRAWING, DETAIL OF HANGER CONNECTIONS. K. A. Kitterdge, Chief Engineer, February 1928

CONTROL #:
AZ0048

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