Located east of Mason City at a small whistle stop known as Portland, this small pony truss bridge crosses the Winnebago River.
Reportedly designed by F.B. Walker and opened in August of 1908, the bridge features a single 6-panel, pin connected Pratt Pony Truss. The bottom chord has a sag in it, intentionally designed. This bridge rests on stone and concrete substructures.
It is unknown if this bridge is older than 1908, although it seems possible. Oftentimes, railroads reused spans were still good to save money. That could've been the situation here as well.
Overall, the bridge appears to be in good condition.
The author has ranked this bridge as being locally significant, due to the common design.
The structure was accessed by asking permission from the local farmers co-op.
The photo above is an overview.
| Upstream | Norris Park Rail Bridge |
| Downstream | Fossil Prairie Park Trail Bridge |