National Register Listing
Listed in National Register of Historic Places in 2018.
Spokane, Portland and Seattle Railway Company-Box Canyon Viaduct
a.k.a. Bridge 270.0
Milepost 270.0, former SP&S RR line, Windust, WA Local significance of the structure: Transportation; Engineering
Listed in National Register of Historic Places in 2018.
About National Register Listings
The National Register of Historic Places is the official list of the Nation’s historic places worthy of preservation. Authorized by the National Historic Preservation Act of 1966, the National Park Service’s National Register of Historic Places is part of a national program to coordinate and support public and private efforts to identify, evaluate, and protect America’s historic and archeological resources.