Opening date June 1964 Installed capacity 81 Mva Length 425 m Construction began March 1956 | Impounds Ohio River Opened June 1964 Operator Duke Energy Impound Ohio River | |
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Location Gallatin County, Kentucky / York Township, Switzerland County, Indiana United States Similar Ohio River, Captain Anthony Meldahl L, Belterra Casino Resort, McAlpine Locks and Dam, Cannelton Locks and Dam | ||
The Markland Locks and Dam is a concrete dam bridge and locks that span the Ohio River. It is 1395 feet (425.2 m) long, and connects Gallatin County, Kentucky, and Switzerland County, Indiana.
Map of Markland Locks and Dam, Kentucky 41095, USA
The locks and dam were reviewed by the Board of Engineers for River and Harbours to replace the Ohio River locks and dams Number 35, 36, 37, 38 and 39. Then the project was approved by the Secretary of the Army on March 11, 1953. Construction on the locks began in March 1956 and they were placed in operation in May 1959. The dam construction began in April 1959 and was finished in June 1964.
Federal Power Commission granted a license for Cinergy to operate a hydroelectric power plant at the dam. Cinergy was later bought by Duke Energy. The plant has a capacity of 81,000 kVA.
On September 27, 2009, the 1,200-foot lock failed and the gates "mismitered" due to a solenoid malfunction. The lock was repaired and reopened on March 1, 2010. The 1,200-foot lock chamber remained closed for 155 days, but the 600-foot lock continued to lock traffic albeit with delays.