From the record
“The Red Bridge is located just northeast of Monroe, Iowa, United States. The 212-foot (65 m) span carried traffic on County Road S74 over the South Skunk River.”
Wikipedia article Red Bridge (Monroe, Iowa), CC BY-SA 4.0.
One of 16 National Register listings published here for Jasper County · listed in 1998 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service · the Wikipedia article