| Key Facts |
| Bridge Name | Facility Carried / Feature Intersected | Location | Structure Type | Construction Date / Builder or Contractor |
| Mermill Road Bridge | Mermill Road Over Rocky Ford | Rural: Wood County, Ohio | Concrete Curved Chord Through Girder, Stationary | 1925 By: Unknown |
| Technical Facts |
| Structure Length | Roadway Width | Main Spans | Approach Spans |
| 60 Feet (18.3 Meters) | 23.3 Feet (7.1 Meters) | 1 | None |
Bridge visited and photographed by Rick McOmber.
Although their appearance is quite different, this bridge functionally appears to be based on the ideas behind the unique concrete curved chord through girder bridges designed and built in Michigan. The design was simple, yet it was not known to be built widely outside of Michigan's borders, with only a couple confirmed similar structures in places other than Michigan. it essentially consisted of taking the standard concrete girder bridge and adding an arch shape to the girders. This was likely done to increase strength, improve efficient use of materials, and enhance the physical appearance of the structure. Although the Mermill Road Bridge does not feature a true curve, the idea behind having the girder taller in the center suggests the thinking was the same when this bridge was constructed. In addition, the 1925 construction date of this Ohio bridge is right at the same time these bridges were being built in Michigan.
