Milwaukee Road Marking on Rosalia Railroad Bridge (Whitman County, Washington)
Historic Rosalia Railroad Bridge in Whitman County, Washington. The concrete open spandrel deck arch bridge was built by the Chicago, Milwaukee, St. Paul and Pacific Railroad (Milwaukee Road - MILW) in 1915 to replace an earlier timber trestle. The viaduct is actually two spans, separated by an embankment. The west bridge (Rosalia Railroad Bridge 1) is 502 feet long and the east bridge (Rosalia Railroad Bridge 2) is a single 114 foot arch span.
The bridges were listed the National Register of Historic Places in 1982 (NRHP No. 82004310 as the Rosalia Railroad Bridge).