From the record
“The EBF Bridge over Powder River is a bridge located near Leiter, Wyoming, which carries Sheridan County Road CN3-269 over the Powder River. The 201.5-foot-long (61.4 m) bridge has two spans: the first span is a Pratt through truss, while the second span is a Warren truss.”
Wikipedia article EBF Bridge over Powder River, CC BY-SA 4.0.
One of 29 National Register listings published here for Sheridan County · listed in 1985 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service