From the record
“The Barstow Bridge was a historic Pratt pony truss bridge, at US 395 and Co. Rd. 4061, over the Kettle River near Kettle Falls, Washington.”
Wikipedia article Barstow Bridge, CC BY-SA 4.0.
One of 12 National Register listings published here for Ferry County · listed in 1995 · category: Structure.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service