| Key Facts |
| Bridge Name | Facility Carried / Feature Intersected | Location | Structure Type | Construction Date / Builder or Contractor |
| 12th Street Bridge Ben M. Williamson Sr. Bridge |
12th Street Over Ohio River | Ashland and Coal Grove: Boyd County, Kentucky and Lawrence County, Ohio | Metal Riveted Cantilever Through Truss, Stationary | 1930 By: Unknown |
| Technical Facts |
| Rehabilitation Dates | Structure Length | Main Spans | Approach Spans | Navigation Vertical Clearance |
| 1993, 2007 | 2278 Feet (694.3 Meters) | 3 | 2 Through Truss, 1 Steel Stringer | 50 Feet (15.2 Meters) |
This is large cantilever truss bridge. The southernmost span of the main continuous cantilever structure is slightly inclined, and this can be seen by observing the angles that the bottom chord assumes. Unlike some cantilever bridges however, the overall deck is not visibly arched.
Although a memorial plaque on this bridge lists a 1950 date, this may reference when the memorial name was applied to the bridge, rather than when the actual bridge was constructed. The National Bridge Inventory provides a 1930 date, which seems appropriate for the construction of this bridge.
