From the record
“The Transcontinental Railroad Grade is a section of railway in northwest Utah, United States, near Corinne, which was listed on the National Register of Historic Places in 1994.”
Wikipedia article Transcontinental Railroad Grade, CC BY-SA 4.0.
One of 45 National Register listings published here for Box Elder County · listed in 1994 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service