Complex sentence: The United States Army Corps of Engineers' 1953 Ohio River Navigation Modernization Program sited the Greenup Locks and Dam project as an early priority so that its pool could serve the Port of Huntington Tri-State which exceeded Pittsburgh in 1953 as the busiest port on the waterway.
Split into simpler sentences: The United States Army Corps of Engineers' 1953 Ohio River Navigation Modernization Program sited the Greenup Locks and Dam project as an early priority so that its pool could serve the Port of Huntington Tri-State. It exceeded Pittsburgh in 1953 as the busiest port on the waterway.