Located in Newton, this bridge carries the Iowa Interstate Railroad over 1st Avenue West (US Highway 6).
Built in 1937 to replace an older deck girder bridge, the structure consists of a main through plate girder span, approached by concrete deck girder spans on either side. The entire bridge rests on concrete substructures, and runs at a heavy skew.
While no plaques are visible on the bridge, the National Bridge Inventory and historic aerial imagery both seem to converge on a 1937 date.
The concrete deck girders are slightly unusual for a bridge of newer age. Relatively few bridges of this design were ever built for railroad use.
Overall, the bridge appears to be well maintained and in good condition.
The author has ranked this bridge as being locally significant, due to the common design.
The photo above is an overview.