From the record
“The BMU Bridge over Wind River is a Parker through truss bridge located near Ethete, Wyoming, that carries Wyoming Highway 132 across the Wind River. The bridge was built circa 1935 as one of seven Parker truss bridges commissioned by the Wyoming Highway Department.”
Wikipedia article BMU Bridge over Wind River, CC BY-SA 4.0.
One of 31 National Register listings published here for Fremont County · listed in 1985 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service