From the record
“Oldtown Covered Bridge, near Oldtown, Kentucky, was listed on the National Register of Historic Places in 1976.”
Wikipedia article Oldtown Covered Bridge, CC BY-SA 4.0.
One of 18 National Register listings published here for Greenup County · listed in 1976 · category: Structure · built in 1880.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service