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Yellowstone National Park

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Corkscrew Bridge, Old East Entrance Road, Sylvan Pass, Yellowstone National Park, Park County, WY



B&W Photos

HB1308501
BWPhotos 204458

HB1308502
BWPhotos 204459

HB1308503
BWPhotos 204460

HB1308504
BWPhotos 204461


Drawings


Photo Caption Pages


Item Title


Location
Sylvan Pass, Yellowstone National Park, WY

Find maps of Yellowstone National Park, WY


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER WY-86
Unprocessed field note material exists for this structure (N949).
Building/structure dates: 1904 initial construction
Building/structure dates: 1916 subsequent work
Building/structure dates: 1919 subsequent work
Significance: The Corkscrew Bridge employed an unusual engineering technique to change elevation rapidly on a steep section of the East Entrance Road near Sylvan Pass. By 1929, when it was bypassed with a road constructed along the above slope, the increasing power and speed of automobiles had rendered it obsolete.

Subjects
Concrete Arch Bridges
Transportation
Tourism


Related Names
Perham & Harris
Chittenden, Capt. Hiram M.
Crecelius, S. F.
Albright, Horace
McClure, Nancy M., Historian
Huisman, Forrest, Delineator
Lowe, Jet, Photographer


Collection
Historic American Engineering Record (Library of Congress)

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