When the Olmstead Lock and Dam on the Ohio River is completed by the Army Corps of Engineers, it will replace what is now the busiest lock and dam system in the U.S. The project is part of an effort by the Corps to repair the nation's waterways -- which received a grade of "D-" on a major trade group's infrastructure report card. The Olmstead project is now in the permanent work stage, officials say. They expect to finish work in 2014, but they note that completion depends on funding.

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