The Oregon Trunk Rail Bridge or Celilo Bridge is a single-track railroad bridge opened in 1912 over the Columbia River in the Pacific Northwest of the United States. It consists of eight steel truss spans and several deck girder spans, and since 1957 it has included a vertical-lift section. The bridge was designed by engineer Ralph Modjeski and erected by the Missouri Valley Bridge & Iron Co., of Leavenworth, Kansas. When built, the bridge's longest span was a 316-foot (96 m) fixed span located just to the north of the swing span; that section was later replaced by a lift span.