This bridge is one of two IAIS bridges across the Rock River here. Both these are part of Vandruff Island.
Built in 1930, this bridge consists of three riveted Quadrangular Through Truss spans, set onto concrete substructures. It is believed that this bridge was relocated from elsewhere, and was originally fabricated approximately 1890.
In addition, it is clear that the northern two spans are different from the southern span. While there is a great amount of similarity, these spans feature differences in the portal bracing.
Currently, the author is researching where these two spans came from.
When relocated here in 1930, it is possible that the bridge was rebuilt. It appears it was originally a Lassig Bridge & Iron Works product.
The author has ranked this bridge as being regionally significant, due to the old age and relocation history.
The photo above is an overview.
| Upstream | IAIS Rock River Bridge |
| South Channel | Vandruff Island Railroad Bridge (N) |
| Downstream | Confluence with Mississippi River |