From the record
“Westport Covered Bridge is a historic covered bridge located in Sand Creek Township, Decatur County, Indiana. It was built in 1880, and is a single span, Burr arch bridge on limestone abutments.”
Wikipedia article Westport Covered Bridge, CC BY-SA 4.0.
One of 10 National Register listings published here for Decatur County · listed in 1982 · category: Structure · built in 1880, by A.M. Kennedy and Sons.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service