From the record
“The Roseman Covered Bridge is a historic covered bridge in Winterset, Iowa. It is prominently featured in the novel The Bridges of Madison County, as well as its film adaptation.”
Wikipedia article Roseman Covered Bridge, CC BY-SA 4.0.
One of 55 National Register listings published here for Madison County · listed in 1976 · category: Structure · built in 1883.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service