From the record
“The Old China Trail is a packed dirt trail along China Creek near its confluence with the South Fork of the Salmon River in the Payette National Forest, near Warren in Idaho County, Idaho. It was listed on the National Register of Historic Places in 1990.”
Wikipedia article Old China Trail, CC BY-SA 4.0.
One of 42 National Register listings published here for Idaho County · listed in 1990 · category: Site.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service