From the record
“The London Mills Bridge was one of nine metal highway bridges in Fulton County, Illinois listed on the National Register of Historic Places. This particular one was located along County Highway 39 as it spans the Spoon River on the north side of London Mills.”
Wikipedia article London Mills Bridge, CC BY-SA 4.0.
One of 38 National Register listings published here for Fulton County · listed in 1980 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service

