Union Pacific, Not In Utah

This page was last updated on January 16, 2023.

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These pages present information about various Union Pacific subsidiaries, predecessors companies and branch roads that in many cases added their own locomotives to UP's large fleet of locomotives, both steam and diesel.

Oregon-Washington Railroad & Navigation Co. -- Information about the majority UP subsidiary in Oregon and Washington, includes Oregon Navigation Co., Oregon Railway & Navigation Co.

Boise, Nampa & Owyhee Railway -- Information about the former Boise, Nampa & Owyhee Railway, then the Idaho Northern Railway, both in western Idaho; sold to Oregon Short Line, becoming OSL's Idaho Northern Branch; sold by UP to Idaho Northern & Pacific in 1993.

Cheyenne & Northern -- Information about the Cheyenne & Northern, which built north from Cheyenne to Wendover, Wyoming. The road purchased five former Denver Pacific 4-4-0s in 1887, and the road became part of the UPD&G in 1890, and the C&S in 1898.

Coalmont Branch -- Information about the former Laramie, North Park & Western Railroad in Wyoming.

Colorado Central -- Information about the Colorado Central Railroad, including the Colorado Central Julesburg Branch, UP's line in northeastern Colorado.

Denver Pacific Railway -- Information about Denver Pacific Railway & Telegraph Co., Denver to Cheyenne, 1867-1880.

Denver, South Park & Pacific Railroad -- Information about the DSP&P, including Denver, Leadville & Gunnison, part of Union Pacific from 1885 to 1894.

Encampment Branch -- Information about the former Saratoga & Encampment Valley Railroad in Wyoming; sold to UP in 1928, merged with UP in 1951.

Enaville Branch -- Information about the former Idaho Northern Railroad in Idaho's panhandle, sold to Oregon Railroad & Navigation Co.

Idaho Central Branch -- Information about the former Idaho Central Railway, which became part of OSL&UN in 1889, becoming OSL&UN's and later OSL's Idaho Central Branch, and later the Boise to Nampa portion of the 1923-1924 Boise Main Line.

Idaho Central Railway -- Information about the former Idaho Central Railway, which became part of OSL&UN in 1889, becoming OSL&UN's and later OSL's Idaho Central Branch, and later the Boise to Nampa portion of the 1923-1924 Boise Main Line.

Idaho Northern Branch -- Information about the former Boise, Nampa & Owyhee Railway, then the Idaho Northern Railway, both in western Idaho; sold to Oregon Short Line, sold by UP to Idaho Northern & Pacific in 1993.

Idaho Northern Railroad -- Information about the former Idaho Northern Railroad in Idaho's panhandle, sold to Oregon Railroad & Navigation Co., becoming OWRR&N's Enaville Branch.

Idaho Northern Railway -- Information about the former Boise, Nampa & Owyhee Railway, then the Idaho Northern Railway, both in western Idaho; sold to Oregon Short Line, becoming OSL's Idaho Northern Branch; sold by UP to Idaho Northern & Pacific in 1993. Includes information about the Payette Valley Railroad.

Ilwaco Railway & Navigation Company -- Information about the narrow gauge railroad in southwestern Washington that furnished Oregon Railway & Navigation's, and Oregon-Washington Railroad & Navigation's only narrow gauge locomotives.

Kansas Central -- Information about the Kansas Central Railway (later Railroad) controlled by Union Pacific after 1881 and which contributed 12 narrow gauge locomotives to UP's 1885 roster.

Kansas Pacific Railway -- Information about Leavenworth, Pawnee & Western (1855-1863); Union Pacific Railway Eastern Division (1863-1869); and Kansas Pacific Railway, 1869-1880.

Kearney Branch -- Information about the former Kearney & Black Hills Railway in Nebraska.

Laramie, North Park & Western -- Information about the former Laramie, North Park & Western Railroad in Wyoming, which became UP's Coalmont Branch.

Montana Union Railway -- Information about a line in Montana owned by UP and leased to Northern Pacific from 1886 to today (still leased to BNSF today). Included is a Google map of the railroad.

Mount Hood Railway -- Information about Mount Hood Railroad, purchased by UP in 1968, operated as the Mount Hood Railway, and sold by UP in 1987.

New Meadows Branch -- Information about the former Pacific & Idaho Northern Railway in Idaho.

North Coast Railroad -- Information about the North Coast Railroad, which built UP's OWRR&N Yakima Branch between Wallula and Yakima, Washington in 1909-1911 (97.3 miles), and the major portion of UP's OWRR&N mainline between Wallula and Spokane (97.8 miles)

Omaha & Republican Valley Railway -- Information about the OR&V which added several branches to UP's Nebraska and Kansas divisions.

Oregon & Washington Railroad -- Information about the OWRR&N subsidiary that built UP's line between Portland and Seattle.

Pacific & Idaho Northern Railway -- Information about the former Pacific & Idaho Northern Railway in Idaho, which became OSL's New Meadows Branch.

Payette Valley Railroad -- Information about the OSL Payette Valley Branch, between Payette and Emmett, Idaho. Included as part of the page about Idaho Northern Railway.

Pioche Branch -- Information about the former Caliente & Pioche Railroad, LA&SL's branch north from Caliente, Nevada, to the Pioche mining district. Includes information about all the mines in the Pioche mining district, and the railroads that served them.

Saratoga & Encampment Valley Railroad -- Information about the former Saratoga & Encampment Valley Railroad in Wyoming; sold to UP in 1928, merged with UP in 1951, becoming UP's Encampment Branch.

Spokane International Railroad -- Information about the Spokane International Railroad, purchased by UP in 1958.

St. Joseph & Grand Island Railway -- Information about the StJ&GI, controlled by UP after 1897 and leased to UP in 1936; sold by UP in 1990 and bought back by UP in 1999.

Union Pacific In Idaho -- A 15-page history of Union Pacific in Idaho, through 1981, completed in October 1981 by UP's Public Relations staff in Salt Lake City. (PDF; 15 pages; 4.8MB)

Walla Walla & Columbia River Railroad -- Information about the narrow gauge railroad in southeastern Washington that furnished some of Oregon Railway & Navigation's narrow gauge locomotives. Some of the line's locomotives were sold in 1883 to Mill Creek Flume & Manufacturing Company, which itself was sold to ORy&N in 1887.

Thornton Waite Articles

Thornton Waite Articles -- An index page of online articles firnished by Thornton Waite, generally covering railroads in Idaho.

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