River | Lock | Open Date | Rehab Datea | Age Based on Openingb | Age Based on Rehab | Data Source for Rehabilitation |
Mississippi | 1 | 1930–1932 | 1980 | 82–84 | 34 | Mark Sudol, USACE |
2 | 1930 | 1995 | 84 | 19 | Saint Paul District website: http://www.mvp.usace.army.mil/Missions/Navigation/LocksDams/LockDam2.aspx | |
3 | 1938 | 1991 | 76 | 23 | Saint Paul District website: http://www.mvp.usace.army.mil/Missions/Navigation/LocksDams/LockDam3.aspx | |
4 | 1935 | 1994 | 79 | 20 | Saint Paul District website: http://www.mvp.usace.army.mil/Missions/Navigation/LocksDams/LockDam4.aspx | |
5 | 1935 | 1998 | 79 | 16 | Saint Paul District website: http://www.mvp.usace.army.mil/Missions/Navigation/LocksDams/LockDam5.aspx |
5a | 1936 | 2000 | 78 | 14 | Saint Paul District website: http://www.mvp.usace.army.mil/Missions/Navigation/LocksDams/LockDam5A.aspx | |
6 | 1936 | 1999 | 78 | 15 | Saint Paul District website: http://www.mvp.usace.army.mil/Missions/Navigation/LocksDams/LockDam6.aspx | |
7 | 1937 | 2002 | 77 | 12 | Saint Paul District website: http://www.mvp.usace.army.mil/Missions/Navigation/LocksDams/LockDam7.aspx | |
8 | 1937 | 2003 | 77 | 11 | Saint Paul District website: http://www.mvp.usace.army.mil/Missions/Navigation/LocksDams/LockDam8.aspx | |
9 | 1938 | 2005 | 76 | 9 | Mark Sudol, USACE | |
10 | 1937 | 2006 | 77 | 8 | Mark Sudol, USACE | |
11 | 1937 | 2012 | 77 | 2 | Mark Sudol, USACE | |
12 | 1939 | 2000 | 75 | 14 | Rock Island District special compilation, May 2014 | |
13 | 1938 | 1996 | 76 | 18 | Rock Island District special compilation, May 2014 | |
14 | 1939 | 1996 | 75 | 18 | Rock Island District special compilation, May 2014 | |
15 | 1934 | 1993 | 80 | 21 | Rock Island District special compilation, May 2014 |
River | Lock | Open Date | Rehab Datea | Age Based on Openingb | Age Based on Rehab | Data Source for Rehabilitation |
16 | 1937 | 1991 | 77 | 23 | Rock Island District special compilation, May 2014 | |
17 | 1939 | 1988 | 75 | 26 | Rock Island District special compilation, May 2014 | |
18 | 1937 | 1990 | 77 | 24 | Rock Island District special compilation, May 2014 | |
19 | 1957 | 2008 | 57 | 6 | Rock Island District special compilation, May 2014 | |
20 | 1936 | 1994 | 78 | 20 | Rock Island District special compilation, May 2014 | |
21 | 1938 | 1990 | 76 | 24 | Mark Sudol, USACE | |
22 | 1938 | 1990 | 76 | 24 | Mark Sudol, USACE | |
24 | 1940 | 2003 | 74 | 11 | Saint Louis District website: http://www.mvs.usace.army.mil/Portals/54/docs/recreation/rivers/NavFactSheets/03Dam24.pdf | |
25 | 1939 | 1999 | 75 | 15 | Saint Louis District website: http://www.mvr.usace.army.mil/Portals/48/docs/CC/FactSheets/Miss/LockDam25.pdf | |
27 | 1953 | 2009 | 51 | 5 | Mark Sudol, USACE | |
Melvin Price | 1990 | None | 24 | 24 | N/A |
Ohio | Olmsted | New construction in progress | N/A | |||
Belleville | 1969 | None | 45 | 45 | N/A | |
Cannelton | 1974 | None | 40 | 40 | N/A | |
Meldahl | 1964 | None | 50 | 50 | N/A | |
Dashields | 1929 | 1980 | 85 | 34 | Mark Sudol, USACE | |
Emsworth | 1921 | 1986c | 93 | 28 | Ohio River Mainstem System Study Integrated Main Report: http://pbadupws.nrc.gov/docs/ML0810/ML081000184.pdf | |
Greenup | 1961 | None | 53 | 53 | N/A | |
Hannibal | 1973 | None | 41 | 41 | N/A | |
Myers | 1975 | None | 39 | 39 | N/A | |
Markland | 1963 | 2011 | 51 | 3 | Waterways Council, Inc. (2011): http://ilrdss.isws.illinois.edu/pubs/govconf2011/session1a/Rohde.pdf | |
McAlpine | 1965 | New lock in 2009 | 49 | 5 | Louisville District: http://www.lrl.usace.army.mil/Missions/CivilWorks/Navigation/LocksandDams/McAlpineLocksandDam.aspx | |
Montgomery | 1936 | 1990 | 78 | 24 | Ohio River Mainstem System Study Integrated Main Report: http://pbadupws.nrc.gov/docs/ML0810/ML081000184.pdf |
River | Lock | Open Date | Rehab Datea | Age Based on Openingb | Age Based on Rehab | Data Source for Rehabilitation |
New Cumberland | 1959 | None | 55 | 55 | N/A | |
Newburgh | 1975 | None | 39 | 39 | N/A | |
Pike Island | 1968 | None | 46 | 46 | N/A | |
Racine | 1971 | None | 43 | 43 | N/A | |
Byrd | 1993 | 2002 | 21 | 12 | Huntington District website: http://www.lrh.usace.army.mil/Missions/Locksand Dams/RobertCByrdLocksandDam.aspx | |
Smithland | 1980 | None | 34 | 34 | N/A | |
Willow Island | 1975 | None | 39 | 39 | N/A | |
Illinois | LaGrange | 1939 | 1988 | 75 | 26 | Rock Island District special compilation, May 2014 |
Peoria | 1938 | 1990 | 76 | 24 | Mark Sudol, USACE | |
O’Brien | 1960 | None | 54 | 54 | N/A | |
Lockport | 1933 | 1989 | 81 | 25 | http://www.mvr.usace.army.mil/Portals/48/docs/CC/FactSheets/IL/Lockport _LockandDam.pdf |
Dresden Island | 1933 | 1995 | 81 | 19 | Mark Sudol, USACE | |
Starved Rock | 1933 | 1996 | 81 | 18 | Mark Sudol, USACE | |
Marseilles | 1933 | 1996 | 81 | 18 | Mark Sudol, USACE | |
Brandon Road | 1933 | 1988 | 81 | 26 | Mark Sudol, USACE | |
Columbia–Snake | McNary | 1953 | None | 61 | 61 | N/A |
Bonneville | 1993 | None | 21 | 21 | N/A | |
John Day | 1971 | None | 43 | 43 | N/A | |
The Dalles | 1960 | None | 54 | 54 | N/A | |
Ice Harbor | 1962 | None | 52 | 52 | N/A | |
Lower Mon | 1969 | None | 45 | 45 | N/A | |
Little Goose | 1970 | None | 44 | 44 | N/A | |
Lower Granite | 1975 | None | 39 | 39 | N/A | |
NOTE: N/A = not applicable; mon = monumental; rehab = rehabilitation; USACE = U.S. Army Corps of Engineers.
a Dates are based on publicly available records that occasionally conflict with one another. There may also be discrepancies due to different dates for when the work was substantially complete and when it was officially closed out in the government accounting records. Locks with “none” did not appear in a search of public records. The lack of a rehabilitation project for the lock has not been confirmed by USACE.
b As of 2014.
c Another rehabilitation is under way.