| Bridge Name: | Marietta–Williamstown Interstate Bridge |
| Carries: | 4 lanes of in West Virginia and Ohio |
| Crosses: | Ohio River |
| Locale: | Williamstown, WV - Marietta, OH |
| Maint: | West Virginia Department of Transportation |
| Design: | Truss bridge |
| Open: | 1967 |
The Marietta - Williamstown Interstate Bridge is a four-lane truss bridge carries Interstate 77 between Williamstown, West Virginia and Marietta, Ohio. The bridge was completed in 1967[1] and it was rehabilitated in 2003.