The City of Salem website has the following description for the Union Street Railroad Bridge:
"The Union Street Railroad Bridge was built across the Willamette River in 1912–13 to connect Salem to the West Willamette Valley. A lift section was included because the Willamette River was heavily used for shipping at the time the bridge was built. The bridge has been permanently closed since 1980.
The bridge was purchased by the City of Salem for one dollar in 2004. The bridge was put on the National Register of Historic Places in January of 2006. It was adapted for re-use as a crossing for pedestrians and bicycles over the Willamette River in 2009."
This photo was captured at the eastern edge of the bridge above the platform level. Almost impossible to obtain otherwise, the photo was captured using a drone. For a video of the span, see the following link in my YouTube channel: https://www.youtube.com/watch?v=1Nflhnyi74c