Historic American Buildings Survey,
Engineering Record, Landscapes Survey
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Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 25, Cap au Gris, Lincoln County, MO
- Title: Upper Mississippi River Nine-Foot Channel Project, Lock & Dam No. 25, Cap au Gris, Lincoln County, MO
- Creator(s): Historic American Engineering Record, creator
- Related Names:
U.S. Army Corps of Engineers
Black & Veatch
United Construction Company
Mississippi Valley Structure Steel Company
J.C. Theilacker Company
Tri-State Dredging Company
Beckman Painting Company
Commonwealth Electric Company
Brown Supply Company
Century Electric Company
Chicago Wood Piling Company
James B. Clow and Sons
Colina Timber Company
Crane Company
Drake Marble Company
General Electric Company
Foote Brothers Gear and Machine Corporation
Hill-Behan Lumber Company
Inland Steel Company
Moloney Electric Company
Massey Concrete Products Company
Mississippi Lime and Materials Company
Twin City Lumber and Shingle Company
M.O. Weaver, Inc.
Universal Atlas Cement Company
American Bridge Company
Magruder Construction Company
Freise Construction Company
U.S. Army Corps of Engineers, St. Louis District
Herr, John P. , photographer
O'Bannon, Patrick W. , historian - Date Created/Published: Documentation compiled after 1968
- Medium:
Photo(s): 93
Data Page(s): 10
Photo Caption Page(s): 7 - Reproduction Number: ---
- Rights Advisory:
No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. (http://www.loc.gov/rr/print/res/114_habs.html)
- Call Number: HAER MO,57-CAG,1-
- Repository: Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA http://hdl.loc.gov/loc.pnp/pp.print
- Notes:
- Significance: The Upper Mississippi River Nine-Foot Channel Project represents one of the largest and most ambitious river improvement projects ever constructed in the United States. The project's origins date to the 1920s and the efforts of Upper Midwest commercial interests to improve their access to markets. During the early years of the Great Depression, the project became transformed into a massive public works program intended to relieve local and regional unemployment. The locks and dams that comprise the project constitute seminal developments in the technological history of American river navigation projects. The project pioneered the use of non-navigable movable dams in the United States. Designers and engineers from the U.S. Army Corps of Engineers committed themselves to a foreign technology, by their decision to incorporate roller gates into the majority of the project's dams and, more importantly, developed new and improved versions of the simpler and more reliable Tainter gate at such a rapid rate that, by the end of the 1930s, roller gates had become a passé technology. The successful completion of the Nine-Foot Channel Project transformed the Upper Mississippi River into a intra-continental canal, providing a fully navigable interior river system throughout the Midwest. The project significantly altered the environment of the Upper Mississippi, but it also served as an impetus for the improvement of drinking water and sewage disposal systems in towns and cities located along the river. Additionally, the project provided new recreational opportunities to the general public.
- Survey number: HAER MO-37
- Building/structure dates: 1935- 1939 Initial Construction
- Building/structure dates: 1943 Subsequent Work
- Building/structure dates: 1946 Subsequent Work
- Building/structure dates: 1948 Subsequent Work
- Building/structure dates: 1964-1967 Subsequent Work
- Building/structure dates: 1970 Subsequent Work
- Building/structure dates: 1974 Subsequent Work
- Building/structure dates: 1975 Subsequent Work
- Building/structure dates: 1976 Subsequent Work
- Building/structure dates: 1977 Subsequent Work
- Building/structure dates: 1978 Subsequent Work
- Building/structure dates: 1980 Subsequent Work
- Building/structure dates: 1984 Subsequent Work
- Building/structure dates: 1985 Subsequent Work
- Building/structure dates: 1988 Subsequent Work
- Subjects:
- Place:
- Latitude/Longitude: 39.003251, -90.690169
- Collections:
- Part of: Historic American Engineering Record (Library of Congress)
- Bookmark This Record:
https://www.loc.gov/pictures/item/mo1078/
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- Rights Advisory: No known restrictions on images made by the U.S. Government; images copied from other sources may be restricted. http://www.loc.gov/rr/print/res/114_habs.html
- Reproduction Number: ---
- Call Number: HAER MO,57-CAG,1-
- Medium:
Photo(s): 93
Data Page(s): 10
Photo Caption Page(s): 7
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- Call Number: HAER MO,57-CAG,1-
- Medium:
Photo(s): 93
Data Page(s): 10
Photo Caption Page(s): 7
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