Astoria and South Coast tracks near Gearhart, Oregon, undated. From the Oregon Historical Society Collection.

Astoria and South Coast tracks near Gearhart, Oregon, undated. From the Oregon Historical Society Collection.

Burlington Northern GP9 Number 1750, former Northern Pacific Number 312; GP9 Number 1728, former Northern Pacific Number 290; at Portland, Oregon on May 24, 1982. GP9 Number 1750 assigned to "Vancouver WA" for maintenance. Photo by Joseph Kobus.

Burlington Northern GP9 Number 1774, former Great Northern Number 701; GP9 Number 1784, former Great Northern Number 711; at Portland, Oregon on April 24, 1982. GP9 Number 1774 assigned to "Vancouver WA" for maintenance. Photo by Joseph Kobus.

Aerial view of the Burlington Northern mainline and an industrial site at Linnton, Oregon, undated.

Replacement slip switch at south end of Portland Union Station in 1979. Photograph by Alden Raney. Other subject classes: Track-Switch.

Burlington Northern machine controlling the terminal tracks at Portland, Oregon, on April 7, 1988. This former Northern Pacific machine is in the 3rd subdivision of the Tacoma division. Photo by GJ Werkema. Other subject classes: Structure, Terminal Track Tower Machine.

Burlington Northern machine controlling the terminal tracks at Portland, Oregon, on April 7, 1988. This former Northern Pacific machine is in the 3rd subdivision of the Tacoma division. Photo by GJ Werkema. Other subject classes: Structure, Terminal Track Tower Machine.

Burlington Northern machine controlling the terminal tracks at Portland, Oregon, on April 7, 1988. This former Northern Pacific machine is in the 3rd subdivision of the Tacoma division. Photo by GJ Werkema. Other subject classes: Structure, Tower Machine

Burlington Northern machine controlling the terminal tracks at Portland, Oregon, on April 7, 1988. This former Northern Pacific machine is in the 3rd subdivision of the Tacoma division. Photo by GJ Werkema. Other subject classes: Structure, Tower Machine