Oregon-Washington Railroad and Navigation Co.

Iron Bridge (Spokane County, Washington)
Railroad Company, 1911
Triple-intersection lattice through truss bridge over Spokane River on Abanoned Railroad
Closed to all traffic

Steel Bridge (Multnomah County, Oregon)
Builder, 1912
Vertical-lift through truss bridge over Willamette River on OR 99W in Portland
Open to highway and light rail traffic on upper deck; bicycle/pedestrian and rail traffic on lower deck