The eastern of two bridges across the Wisconsin River at Sauk City, this bridge now crosses a stagnant back channel.
Built in 1911, the bridge consists of secondhand steel and iron components. The main spans of the bridge are a pair of 150-foot 6-panel pin connected Pratt Through Trusses, originally built in 1891 as part of the Mississippi River Bridge at Hastings, Minnesota. In 1910, those trusses were replaced by the current approach spans.
In addition, the bridge is approached by a 45 foot "type B" girder on either side, and several trestle spans on the east side. The girders were originally fabricated in 1892 at Bridge #A-56, across the North Branch Chicago River between the Chicago suburbs of Edgebrook and Forest Glen.
Often, railroads would reuse steel spans to save costs, particularly on branch lines.
The entire bridge rests on concrete and timber substructures. At one time, a long trestle connected this bridge to the main channel bridge.
Overall, this structure appears to remain in relatively good condition. Plans have been made to convert this structure to trail use.
The author has ranked this bridge as being regionally significant, due to the age of the trusses and girders.
The photo above is an overview in early 2018.
| Upstream | Merrimac Rail Bridge |
| Main Channel | Sauk City Bridge |
| Downstream | Spring Green Rail Bridge |