| Key Facts |
| Bridge Name | Facility Carried / Feature Intersected | Location | Structure Type | Construction Date / Builder or Contractor |
| 22 Mile Road Bridge | 22 Mile Road Over St. Joseph River | Rural: Calhoun County, Michigan | Concrete Girder, Stationary | 1920 By: A. R. Morrison of Port Huron, Michigan |
| Technical Facts |
| Structure Length | Roadway Width | Main Spans | Span Length | Approach Spans |
| 80 Feet (24.3 Meters) | 18 Feet (5.5 Meters) | 2 | 40 Feet (12.2 Meters) | None |
This is the longest of only two straight chord concrete through girders remaining in Calhoun County. The bridge is two spans, and is thus historically significant as one of very few remaining multi-span concrete girders in Michigan. The bridge was built in 1920. The contractor was A. R. Morrison from Port Huron, Michigan. It was built as a State Reward Bridge, and the plaque on the bridge lists it as number 23, making it an early example of a bridge built under the State Reward program. This girder is the type in which inset rectangles appear only on the outside of the girders. The bridge is in good overall condition, although some spalling is starting to show.
