| Robert C. Byrd Lock and Dam | |
| Name Official: | Robert C. Byrd Lock and Dam |
| Dam Crosses: | Ohio River |
| Location: | Ohio/West Virginia border |
| Operator: | United States Army Corps of Engineers Huntington District |
| Dam Type: | 8 Roller gates |
| Res Elevation: | 538 feet above sealevel |
| Dam Length: | 1,132 feet |
| Construction Began: | August 25, 1937 |
| Opening: | October 1937 |
| Cost: | Lock Replacement $244,550,000 Dam Rehabilitation $46,700,000 |
| Coordinates: | 38.6816°N -82.19°W |
The Robert C. Byrd Lock and Dam, formerly the Gallipolis Lock and Dam, is the 10th lock and dam on the Ohio River, located 280 miles downstream from Pittsburgh. There are 4 locks: one for commercial barge traffic, 1,200 feet long by 110 feet wide; the auxiliary lock is 600 feet long by 110 feet wide; and there are 2 smaller parallel locks.[1]