From the record
“The Yellowstone River Bridge is a site on the National Register of Historic Places located in Fallon, Montana, United States. It was added to the Register on January 4, 2010.”
Wikipedia article Yellowstone River Bridge, CC BY-SA 4.0.
One of 3 National Register listings published here for Prairie County · listed in 2010 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service