Burlington Northern eastbound coal train X200 with Wisconsin Power and Light hopper cars and caboose on the trestle over the Sheyenne River in Valley City, North Dakota on March 14, 1981. Photo by Al Christianson

Burlington Northern eastbound coal train with Burlington Northern hopper cars on the trestle over the Sheyenne River in Valley City, North Dakota on February 20, 1981. Photo by Al Christianson.

Burlington Northern Green River Bridge east of Auburn, Washington, on December 01, 1973. This Former Northern Pacific bridge is on the 1st subdivision of the Tacoma division. Photo by GJ Werkema. Subject Classes: bridge, Green River

Burlington Northern highway overpass at Kiona, Washington, on June 26, 1986. This former Northern Pacific structure is in their 3rd subdivision of the Idaho division. Photo by GJ Werkema. Subject Classes: bridge, highway overpass

Burlington Northern mainline between Willmar and Spicer, Minnesota on October 28, 1985. Photo by Howard Patrick.

Burlington Northern new track south of Granite Falls, Minnesota on May 16, 1979. Photo by Howard Patrick.

Burlington Northern overhead A view of yard facilities, engine house and bridge, November 14, 1971. From the W. Richard Parks Sr. Collection.

Burlington Northern Railroad bridge at Maple Valley, Washington in August 1973. Former Pacific Coast Railroad Cedar River trestle being demolished, woman and children observing. Other Subject Classes: railroad bridges.

Burlington Northern Railroad bridge at Maple Valley, Washington in August 1973. Former Pacific Coast Railroad Cedar River trestle being demolished. Other Subject Classes: railroad bridges.

A view of the Burlington Northern Celilo Bridge and the Columbia River from the east end of the yard at Wishram, Washington, undated.

A view of the Burlington Northern Celilo Bridge and the Columbia River from the east end of the yard at Wishram, Washington, undated.

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.

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.

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.

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.

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.

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 Train 191 with Great Northern caboose on the trestle south of Granite Falls, Minnesota on December 19, 1971. Photo by Howard Patrick.

Burlington Northern diesel locomotive 794 is the trailing unit on Train 191 crossing trestle in Granite Falls, Minnesota on September 22, 1974. Number 794 is an F9A built by General Motors Electro-Motive Division (EMD), builder's number 18129. Photo by Howard Patrick.

Caboose on the rear of a train with wrecked hoppers on flatcars in Burlington Northern Train 191 on trestle south of Granite Falls, Minnesota on September 22, 1974. Photo by Howard Patrick.

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.

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.

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

Burlington Northern westbound Train Number 7 Zephyr on the Stone Arch Bridge in Minneapolis, Minnesota on April 24, 1971. Photo by Howard Patrick.