The following railroads operate in Idaho.
==Common freight carriers==<!--City of Boise Railroad?-->
- Canadian Pacific Kansas City Railway (CPKC)
- City of Boise Railroad (COB)
- BG&CM Railroad (BGCM)
- BNSF Railway (BNSF)
- Boise Valley Railroad (BVRR) (WATX)
- Eastern Idaho Railroad (EIRR) (WATX)
- Frontier Rail (FTRX)
- Great Northwest Railroad (GRNW) (WATX)
- Idaho and Sedalia Transportation Company (ISR)
- Idaho Northern and Pacific Railroad (INPR)
- Pend Oreille Valley Railroad (POVA)
- St. Maries River Railroad (STMA)
- Union Pacific Railroad (UP)
- Washington, Idaho & Montana Railway LLC (WI&M)
Passenger carriers
- Amtrak (AMTK)
- Silverwood Theme Park Steam Train
Private
- Idaho National Laboratory
Defunct railroads
<!--Idaho Central Railroad (1920)? Latour Creek Railroad? Snake River Valley Railroad?-->
{| class="wikitable sortable"
!Name
!Mark
!System
!From
!To
!Successor
!Notes
|-
|Alder Creek Railway
|
|
|1912
|1918<!--?-->
|N/A
|-
|Boise City Railway and Terminal Company
|
|UP
|1893
|1910
|Oregon Short Line Railroad
|-
|Boise, Nampa and Owyhee Railway
|
|UP
|1896
|1907
|Idaho Northern Railway
|-
|Burlington Northern Inc.
|BN
|
|1970
|1981
|Burlington Northern Railroad
|-
|Burlington Northern Railroad
|BN
|
|1981
|1996
|Burlington Northern and Santa Fe Railway
|-
|Camas Prairie RailNet
|CSP
|
|1998
|2004
|Great Northwest Railroad
|-
|Camas Prairie Railroad
|CSP
|NP/ UP
|1909
|1998
|Camas Prairie RailNet
|-
|Canyon Creek Railroad
|
|NP
|1887
|1888
|Coeur d'Alene Railway and Navigation Company
|-
|Central Idaho Railroad
|
|UP
|1910
|1914
|Oregon Short Line Railroad
|-
|Chicago, Milwaukee and Puget Sound Railway
|
|MILW
|1909
|1912
|Chicago, Milwaukee and St. Paul Railway
|-
|Chicago, Milwaukee and St. Paul Railway
|
|MILW
|1912
|1928
|Chicago, Milwaukee, St. Paul and Pacific Railroad
|-
|Chicago, Milwaukee and St. Paul Railway of Idaho
|
|MILW
|1906
|1908
|Chicago, Milwaukee and St. Paul Railway of Washington
|-
|Chicago, Milwaukee and St. Paul Railway of Washington
|
|MILW
|1908
|1909
|Chicago, Milwaukee and Puget Sound Railway
|-
|Chicago, Milwaukee, St. Paul and Pacific Railroad
|MILW
|MILW
|1928
|1980
|St. Maries River Railroad, Union Pacific Railroad<!--any BN? they got the WI&M, but that was never merged into the Milwaukee-->
|-
|Clearwater Short Line Railway
|
|NP
|1898<!--or later in Idaho?-->
|1914
|Northern Pacific Railway
|-
|Clearwater Valley Railroad
|
|UP
|1898
|1916
|Oregon–Washington Railroad and Navigation Company
|-
|Coeur d'Alene Railway and Navigation Company
|
|NP
|1886<!--or later in Idaho?-->
|1897
|Northern Pacific Railway
|-
|Coeur d'Alene and Pend d'Oreille Railway
|
|UP
|1910
|1941
|Spokane International Railroad
|-
|Columbia and Palouse Railroad
|
|UP
|1882<!--or later in Idaho?-->
|1910
|Oregon Railroad and Navigation Company
|-
|Craig Mountain Railway
|
|
|1921
|1965
|N/A
|-
|Craig Mountain Lumber Company's Railway
|
|
|1909
|1921<!--?-->
|Craig Mountain Railway
|-
|Gilmore and Pittsburgh Railroad
|
|NP
|1907
|1939
|N/A
|-
|Great Northern Railway
|GN
|GN
|1890<!--leased the St. Paul, Minneapolis and Manitoba Railway-->
|1970
|Burlington Northern Inc.
|-
|Idaho Central Railway
|
|UP
|1886<!--or later in Idaho?-->
|1889
|Oregon Short Line and Utah Northern Railway
|-
|Idaho Northern Railroad
|
|UP
|1906
|1910
|Oregon–Washington Railroad and Navigation Company
|-
|Idaho Northern Railway
|
|UP
|1897
|1912
|Oregon Short Line Railroad
|-
|Idaho Southern Railroad
|
|
|1908
|1916<!--?-->
|N/A
|-
|Idaho and Washington Northern Railroad
|
|MILW
|1907
|1916
|Chicago, Milwaukee and St. Paul Railway
|-
|Idaho and Western Railway
|
|MILW
|1909
|1912
|Chicago, Milwaukee and Puget Sound Railway
|-
|Intermountain Railway
|
|
|1907
|1935<!--?-->
|N/A
|-
|Kootenai Valley Railway
|
|GN
|1898<!--in Idaho too?-->
|1913
|Great Northern Railway
|-
|Lake Creek and Coeur d'Alene Railroad
|
|UP
|1906
|1910
|Oregon–Washington Railroad and Navigation Company
|-
|Lewiston, Nezperce and Eastern Railroad
|
|
|1915<!--??-->
|1924<!--?-->
|N/A
|-
|Malad Valley Railroad
|
|UP
|1902<!--or later in Idaho?-->
|1910
|Oregon Short Line Railroad
|-
|Milner and North Side Railroad
|
|
|1907<!--??-->
|1915<!--?-->
|N/A
|-
|Minidoka and Southwestern Railroad
|
|UP
|1904
|1910
|Oregon Short Line Railroad
|-
|Nezperce Railroad
|NEZP
|
|1945
|1983<!--?-->
|N/A
|-
|Nez Perce and Idaho Railroad
|
|
|1917
|1946
|Nezperce Railroad
|-
|Nez Perce and Idaho Railroad
|
|
|1908
|1915
|Lewiston, Nezperce and Eastern Railroad
|-
|Northern Pacific Railroad
|
|NP
|1864
|1896
|Northern Pacific Railway
|-
|Northern Pacific Railway
|NP
|NP
|1896
|1970
|Burlington Northern Inc.
|-
|Ohio Match Company Railway
|
|SI
|1903
|1944
|Converted into roads.
|-
|Oregon Railroad and Navigation Company
|
|UP
|1896
|1910
|Oregon–Washington Railroad and Navigation Company
|-
|Oregon Railway and Navigation Company
|
|UP
|1884<!--leased the Columbia and Palouse Railroad??-->
|1896
|Oregon Railroad and Navigation Company
|-
|Oregon Short Line Railroad
|
|UP
|1897
|1987
|Union Pacific Railroad
|-
|Oregon Short Line Railway
|
|UP
|1882
|1889
|Oregon Short Line and Utah Northern Railway
|-
|Oregon Short Line and Utah Northern Railway
|
|UP
|1889
|1897
|Oregon Short Line Railroad
|-
|Oregon–Washington Railroad and Navigation Company
|
|UP
|1910
|1987
|Union Pacific Railroad
|-
|Oregon, Washington and Idaho Railroad
|
|UP
|1903<!--or later in Idaho?-->
|1910
|Oregon–Washington Railroad and Navigation Company
|-
|Pacific and Idaho Northern Railway
|P&IN
|UP
|1899
|1936<!--?-->
|Oregon Short Line Railroad
|-
|Palouse River and Coulee City Railroad
|PCC
|
|1996
|2006<!--or does it still own the track?-->
|Washington and Idaho Railway
|-
|Payette Valley Railroad
|
|UP
|1906
|1914
|Oregon Short Line Railroad
|-
|Payette Valley Extension Railroad
|
|UP
|1910
|1914
|Oregon Short Line Railroad
|-
|St. Anthony Railroad
|
|UP
|1899
|1910
|Oregon Short Line Railroad
|-
|Salmon River Railroad
|
|UP
|1901
|1910
|Oregon Short Line Railroad
|-
|Salt Lake and Idaho Railroad
|
|UP
|1909
|1914
|Oregon Short Line Railroad
|-
|San Francisco, Idaho and Montana Railway
|
|UP
|1905
|1909
|Oregon Short Line Railroad
|-
|Spokane, Coeur d'Alene and Palouse Railway
|
|GN
|1926<!--had been Idaho Central Railway-->
|1943
|Great Northern Railway
|Electric until 1941
|-
|Spokane Falls and Idaho Railroad
|
|NP
|1886<!--or later in Idaho?-->
|1898
|Northern Pacific Railway
|-
|Spokane International Railroad
|SI
|UP
|1941
|1987
|Union Pacific Railroad
|-
|Spokane International Railway
|
|UP
|1905
|1941
|Spokane International Railroad
|-
|Spokane and Palouse Railway
|
|NP
|1886<!--or later in Idaho? was the Eastern Washington Railway authorized in Idaho?-->
|1898
|Northern Pacific Railway
|-
|Utah Northern Railroad
|
|UP
|1872<!--or later in Idaho?-->
|1878
|Utah and Northern Railway
|-
|Utah and Northern Railway
|
|UP
|1878
|1889
|Oregon Short Line and Utah Northern Railway
|-
|Wallace and Sunset Railroad
|
|NP
|1890
|1898<!--?-->
|Northern Pacific Railway
|-
|Washington and Idaho Railroad
|
|UP
|1886<!--or later in Idaho?-->
|1896
|Oregon Railroad and Navigation Company
|-
|Washington, Idaho and Montana Railway
|WIM
|MILW
|1905
|1980
|Burlington Northern Inc.
|-
|Weiser, Idaho and Spokane Railway
|
|UP
|<!--no idea-->
|1899
|Pacific and Idaho Northern Railway
|-
|Yellowstone Park Railroad
|
|UP
|1905
|1910
|Oregon Short Line Railroad
|}
;Electric
- Inland Empire Railroad
- Spokane, Coeur d'Alene and Palouse Railway
- Spokane and Eastern Railway and Power Company
- Spokane and Inland Empire Railroad
Notes
References
- Association of American Railroads (2003), . Retrieved May 9, 2005.