Burlington Northern Train Number 53 Badger northbound on the Nemadji Bridge south of Superior, Wisconsin on April 25, 1971. Photo by Howard Patrick.

Westbound piggyback freight Number 23 crossing the Sheyenne River at Luverne, North Dakota on February 18, 1981. Four Sea-Land containers loaded on the two Trailer Train flatcars ahead of the Burlinton Northern caboose. Photo by Al Christianson.

Eastbound loaded coal X200 at Valley City, North Dakota on March 14, 1981. Unit train with WISX gondolas, owned by Wisconsin Power and Light. Photo by Al Christianson.

Burlington Northern Sheyenne River viaduct at Valley City, North Dakota, on May 17, 2003. This former Northern Pacific structure is in their 1st subdivision of the Fargo division. Photo by GJ Werkema. Subject Classes: bridge, viaduct

Burlington Northern Sheyenne River viaduct at Valley City, North Dakota, on May 17, 2003. This former Northern Pacific structure is in their 1st subdivision of the Fargo division. Photo by GJ Werkema. Subject Classes: bridge, viaduct

Burlington Northern Sheyenne River viaduct at Valley City, North Dakota, on May 17, 2003. This former Northern Pacific structure is in their 1st subdivision of the Fargo division. Photo by GJ Werkema. Subject Classes: bridge, viaduct

Burlington Northern Railroad bridge at Maple Valley, Washington, circa 1971. Former Pacific Coast Railroad timber trestle over Cedar River, looking north, old section house in distance. Other Subject Classes: railroad bridges, railroad mainline, railroad maintenance and repair.

Burlington Northern Railroad bridge at Maple Valley, Washington, circa 1971. Former Pacific Coast Railroad timber trestle over Cedar River, looking north, old section house in distance. Other Subject Classes: railroad bridges, railroad mainline, railroad maintenance and repair.

On August 8, 1989 work began on a 72 hour replacement of the swing bridge 5.1, the Willamette River Bridge, with a new lift bridge. The work was completed on August 11, 1989. Photograph by Alden Raney. Other subject classes: Bridge-Swing.

On August 8, 1989 work began on a 72 hour replacement of the swing bridge 5.1, the Willamette River Bridge, with a new lift bridge. The work was completed on August 11, 1989. Photograph by Alden Raney. Other subject classes: Bridge-Swing.