Providence & Worcester Railroad
CRANDIC
Genesee & Wyoming Inc.
Houston East and West Texas Railway
Spokane International Railroad
Chattooga and Chickamauga Railway
Green Bay and Western Railroad
Seaboard Coast Line Railroad
Mississippi Southern Railroad
Alabama & Gulf Coast Railway
Mobile and Ohio Railroad
Pittsburg and Shawmut Railroad
Buffalo, Rochester and Pittsburgh Railway
M&B Railroad
Massena Terminal Railroad
Columbus, Mississippi
Warren & Trumbull Railroad
Ohio Southern Railroad (1986)
Mississippi
Mississippi Central Railroad (1901–1967)
Timeline of Class I railroads (1910–1929)
Texas and Northern Railway
Mid-Michigan Railroad
BNSF Railway
West Jersey and Seashore Railroad
Rapid City, Pierre & Eastern Railroad
Illinois and Midland Railroad
Luxapalila Valley Railroad
Ventura County Railroad
Cape Breton & Central Nova Scotia Railway
Standard gauge
Arkansas, Louisiana & Mississippi Railroad
Burlington Northern Railroad
Canadian Pacific Lines in Vermont
Baltimore and Ohio Railroad
Winona, MS
Oahu Railway and Land Company
Georgia Railroad and Banking Company
Florence and Cripple Creek Railroad
Rockdale, Sandow and Southern Railroad
Conecuh Valley Railroad
Yazoo River
Connecticut Southern Railroad
Mahoning Valley Railway
Corpus Christi Terminal Railroad
Prescott & Northwestern Railroad
North Carolina & Virginia Railroad
Portland & Western Railroad
West Point, MS
Pittsburg & Shawmut Railroad
Chesapeake & Albemarle Railroad
Norfolk Southern Railway
Beaumont, Sour Lake and Western Railway
Aliquippa & Ohio River Railroad
Reporting mark
Buffalo and Susquehanna Railroad
Southern Pacific Railroad
Minneapolis, St. Paul and Sault Ste. Marie Railroad
Maine Central Railroad Company
Hocking Valley Railway
Gulf, Mobile and Ohio Railroad
Canadian National Railway
Track gauge
Pittsburg, Shawmut and Northern Railroad
Riceboro Southern Railway
Atlantic & Western Railway
Central Railroad of New Jersey
Cleveland, Akron and Columbus Railway
St. Louis Southwestern Railway
Cincinnati Northern Railroad (1894–1938)
St Lawrence & Atlantic Railroad
Atlanta and West Point Railroad
Louisiana and Arkansas Railway
Ripley & New Albany Railroad
Port Bienville Railroad
Natchez Railway
Class I railroad
Delaware and Hudson Railway
New Orleans, Texas and Mexico Railway
Coal and Coke Railway
New Orleans and Northeastern Railroad
Minneapolis and St. Louis Railway
Three Notch Railroad
Clinchfield Railroad
Timeline of Class I railroads (1930–1976)
Columbus & Ohio River Railroad
Chattahoochee Industrial Railroad
Grenada Railroad
Eastern Alabama Railway
Denver and Rio Grande Western Railroad
Atlanta, Birmingham and Coast Railroad
Iowa Central Railway
Pittsburgh & Ohio Central Railroad
Arizona Eastern Railway
Cedar Rapids, Iowa
Florida East Coast Railway
Staten Island Railway
Pittsburgh and Lake Erie Railroad
Litchfield and Madison Railway
San Diego and Arizona Railway
Mississippi Delta Railroad
Baldwin Locomotive Works
Cincinnati, Hamilton and Dayton Railway (1846–1917)
Georgia Southwestern Railroad
Savannah Port Terminal Railroad
Quebec Gatineau Railway
Georgia Central Railway
Pennsylvania-Reading Seashore Lines
Western Kentucky Railway
Western Maryland Railway
New York, Susquehanna and Western Railway
Gulf and Ship Island Railroad
Long Island Rail Road
Point Comfort & Northern Railway
Oregon Railroad and Navigation Company
Central Railroad of Pennsylvania
Illinois Central Railroad
Great Northern Railway (U.S.)
Meridian Southern Railway
Cumberland Valley Railroad
Old Augusta Railroad
Michigan Shore Railroad
Rochester & Southern Railroad
Tazewell & Peoria Railroad
Syracuse and Binghamton Railroad
Arkansas Midland Railroad (1992)
Youngstown & Austintown Railroad
Pittsburgh, Cincinnati, Chicago and St. Louis Railroad
Detroit and Toledo Shore Line Railroad
Allegheny & Eastern Railroad
South Buffalo Railway
Kyle Railroad
Burlington-Rock Island Railroad
Kansas City, Mexico and Orient Railway
Detroit, Grand Haven and Milwaukee Railway
Duluth, Missabe and Iron Range Railway
San Joaquin Valley Railroad
Minneapolis, Northfield and Southern Railway
Chattooga & Chickamauga Railway
Pere Marquette Railway
CSX
Mississippi Central Railroad
Virginian Railway
Tomahawk Railway
Yazoo and Mississippi Valley Railroad
Carolina and Northwestern Railway
Redmont Railway
Michigan Central Railroad
Cambria and Indiana Railroad
Knob Lake & Timmins Railway
Richmond, Fredericksburg and Potomac Railroad
Jacksonville Port Terminal Railroad
Colorado Midland Railway
Southern Railway (U.S.)
Atlanta and St. Andrews Bay Railroad
Canadian Northern Railway
Quanah, Acme and Pacific Railway
Louisville and Nashville Railroad
Central Vermont Railway
Detroit and Mackinac Railway
CPKC
Bay Line Railroad
Maryland, Delaware and Virginia Railway
St. Louis, San Francisco and Texas Railway
Lake Shore and Michigan Southern Railway
Cleveland, Cincinnati, Chicago and St. Louis Railway
Pacific Electric
Union Pacific Railroad
Rail line
Kansas City Southern Railway
Duluth, South Shore and Atlantic Railway
Erie Railroad
Oregon Electric Railway
Golden Isles Terminal Railroad
Western Railway of Alabama
Chicago, Rock Island and Gulf Railway
Puget Sound & Pacific Railroad
Mississippi Export Railroad
Chesapeake and Ohio Railway
Detroit, Toledo and Ironton Railroad
Piedmont and Northern Railway
Tennessee Central Railway
Auto-Train Corporation
Penn Central Transportation Company
Fort Worth and Rio Grande Railway
Houston and Texas Central Railway
Conrail
Golden Triangle Railroad
Cincinnati, New Orleans and Texas Pacific Railway
Michigan Interstate Railway
New York, Chicago and St. Louis Railroad
4-6-0
Norfolk and Western Railway
Toledo and Ohio Central Railway
Port Reading Railroad
Ohio Central Railroad System
St. Louis–San Francisco Railway
Greenwood, MS
Illinois Terminal Railroad
Greenville, Mississippi
Kosciusko & Southwestern Railway
Wheeling and Lake Erie Railway (1916–88)
Norfolk Southern Railway (1942–82)
Atchison, Topeka and Santa Fe Railway
Texas Northeastern Railroad
Chicago Great Western Railway
Gulf, Colorado and Santa Fe Railway
New York, Philadelphia and Norfolk Railroad
Utah Railway
New England Central Railroad
Indiana & Ohio Railway
Atlanta, Birmingham and Atlantic Railway
Great River Railroad
Chicago, St. Paul, Minneapolis and Omaha Railway
Valdosta Railway
Otter Tail Valley Railroad
Vandalia Railroad (1905–17)
Kiamichi Railroad
Delaware, Lackawanna and Western Railroad
California Northern Railroad
Buffalo & Pittsburgh Railroad
Pennsylvania Company
Lehigh and New England Railroad
Waverly Bridge (Mississippi)
Duluth, Missabe and Northern Railway
Monongahela Railway
Northern Central Railway
Lehigh and Hudson River Railway
St. Lawrence and Atlantic Railroad
Grand Rapids Eastern Railroad
St. Louis, Brownsville and Mexico Railway
Monon Railroad
Wellsboro & Corning Railroad
Dansville & Mount Morris Railroad
Amtrak
West Tennessee Railroad
Gloster Southern Railroad
Toledo, Peoria & Western Railway
Rotterdam Rail Feeding
Canadian Pacific Railway
Central Railroad of Indiana
Spokane, Portland and Seattle Railway
Via Rail
Carolina Piedmont Railroad
One Rail Australia
Wilmington Terminal Railroad
Willamette & Pacific Railroad
Central New England Railway
Kennecott Utah Copper rail line
Georgia Southern and Florida Railway
Missouri and North Arkansas Railroad
Commonwealth Railway
South Carolina Central Railroad
Reading Company
San Antonio and Aransas Pass Railway
Nashville, Chattanooga and St. Louis Railway
BNSF
Huron & Eastern Railway
Central Oregon & Pacific Railroad
Copper River and Northwestern Railway
Lehigh Valley Railroad
Texas and Pacific Railway
Vicksburg Southern Railroad
Texarkana and Fort Smith Railway
Bangor and Aroostook Railroad
Greenville, MS
Maryland Midland Railway
Northern Pacific Railway
Indiana Southern Railroad
Oklahoma City – Ada – Atoka Railway
Chicago, Fort Wayne & Eastern Railroad
Wichita Valley Railway
Fordyce & Princeton Railroad
Toledo, St. Louis and Western Railroad
Pennsylvania Railroad
Ferromex
Baltimore, Chesapeake and Atlantic Railway
Tishomingo Railroad
New York, New Haven and Hartford Railroad
Lake Erie and Western Railroad
Rail transport in Mexico
Kosciusko, MS
Panhandle and Santa Fe Railway
Rail transportation in the United States
Trinity and Brazos Valley Railway
St. Joseph and Grand Island Railway
Alabama Southern Railroad
Illinois Railway Museum
Alton Railroad
Akron, Canton and Youngstown Railroad
Texas Mexican Railway
Louisiana & Delta Railroad
CSX Transportation
Huron Central Railway
New Jersey and New York Railroad
Lake Superior and Ishpeming Railroad
Los Angeles and Salt Lake Railroad
Common carrier
Missouri Pacific Railroad
Evansville and Crawfordsville Railroad
Texas and New Orleans Railroad
Peoria and Eastern Railway
Seaboard Air Line Railroad
Nevada Northern Railway
St. Louis, Iron Mountain and Southern Railway
Chicago, Rock Island and Pacific Railroad
Charleston and Western Carolina Railway
Grand Trunk Corporation
Ann Arbor Railroad (1895–1976)
Atlantic City Railroad
New York Central Railroad
Meridian & Bigbee Railroad
Arizona & California Railroad
York Railway
El Paso and Southwestern Railroad
Midland Valley Railroad
Mississippi Hills National Heritage Area
Rail transport in Canada
Cincinnati, Indianapolis and Western Railroad
Chicago and North Western Transportation Company
Savannah and Atlanta Railway
Galveston Railroad
Central of Georgia Railway
Columbus & Chattahoochee Railroad
Youngstown Belt Railroad
Ottawa Valley Railway
Philadelphia, Baltimore and Washington Railroad
Heart of Georgia Railroad
Bauxite & Northern Railway
Cincinnati, Lebanon and Northern Railway
Montour Railroad
Duluth, Winnipeg and Pacific Railway
Erie Lackawanna Railway
Chicago, Milwaukee, St. Paul and Pacific Railroad
Buffalo Bayou, Brazos and Colorado Railway
Ulster and Delaware Railroad
Rail trail
Kansas, Oklahoma and Gulf Railway
Wiregrass Central Railroad
Wabash Railroad
Goderich–Exeter Railway
Columbus, MS
Marquette Rail
Kansas City Southern de México
Fort Smith and Western Railway
Chicago, Indiana and Southern Railroad
Mississippian Railway
Chattahoochee Bay Railroad
Toledo, Peoria and Western Railway
Chicago, Peoria and St. Louis Railroad
AN Railway
Genesee & Wyoming Railroad
Columbus & Greenville Railway
Missouri–Illinois Railroad
Seaboard System Railroad
Chicago, Rock Island & Pacific Railroad (2017)
Chicago, Milwaukee and Puget Sound Railway
Wisconsin Central Railway (1897–1954)
Western Labrador Rail Services
Freightliner Group
Minnesota and International Railway
New York Connecting Railroad
Salt Lake City Southern Railroad
Vicksburg, Shreveport and Pacific Railway
Atlantic Coast Line Railroad
Atlantic and Danville Railway
Pittsburgh and West Virginia Railway
Denver and Salt Lake Railway
East Tennessee Railway
Elgin, Joliet and Eastern Railway
Chicago, Burlington and Quincy Railroad
Canadian National
Santa Fe, Prescott and Phoenix Railway
Warren & Saline River Railroad
Spokane and Inland Empire Railroad
Canadian Pacific Kansas City
Soo Line Railroad
Missouri–Kansas–Texas Railroad
Northwestern Pacific Railroad
Chessie System
Rutland Railroad
Olympia & Belmore Railroad
Grand Trunk Western Railroad
Alabama Great Southern Railroad
Little Rock & Western Railway
San Diego & Imperial Valley Railroad
Butte, Anaconda and Pacific Railway
Illinois & Midland Railroad
Fonda, Johnstown and Gloversville Railroad
Central Railroad of Indianapolis
Chicago and Eastern Illinois Railroad
First Coast Railroad
Cascade & Columbia River Railroad
Fort Worth and Denver Railway
Timeline of Class I railroads (1977–present)
New York, Ontario and Western Railway
Canadian Pacific Lines in Maine
Genesee & Wyoming
Western Pacific Railroad
CG Railway
Duluth and Iron Range Railroad
Chicago and Atlantic Railway
Dallas, Garland & Northeastern Railroad
Gulf, Mobile and Northern Railroad
Sacramento Northern Railway
Grand Rapids and Indiana Railroad
International–Great Northern Railroad
Georgia and Florida Railroad (1926–63)
Colorado and Wyoming Railway
Colorado and Southern Railway
Boston and Maine Railroad
Missouri & Northern Arkansas Railroad
Southern Ontario Railway
CAGY Industries
Oregon Short Line Railroad
Alabama, Tennessee and Northern Railroad
Illinois Central Gulf Railroad
R.J. Corman Railroad/Tennessee Terminal
San Diego and Arizona Eastern Railway
St. Louis Southwestern Railway of Texas