3 ft gauge railroads in the United States

This is a list of narrow-gauge railways in the United States.

Narrow-gauge railroads of various sizes existed across the US, especially during the late 1800s, with the most popular gauge being gauge..The Standardization of Track Gauge on North American Railways, 1830-1890 Some of the more famous gauge railroad networks in the US were based in California, Colorado, and Hawaii. These narrow-gauge lines were easier to build than standard gauge and cost significantly less to construct. Some of the lines of these former networks still exist in the present day and continue to use gauge track, while the rest were either widened to standard gauge or abandoned (see table below).

Railroads State/territoryRailwayAlabamaAnniston and Atlantic Railroad (defunct) East and West Railroad of Alabama (crossed into Georgia) (converted to standard gauge) (defunct)AlaskaAlaska Railroad (standard gauge lines also present) (dual gauge lines with standard gauge track previously present) (defunct - standard gauge lines still operating) Crooked Creek & Whiskey Island Railroad (located in Pioneer Park) (operating) Tanana Valley Railroad (defunct) White Pass & Yukon Route (crosses into British Columbia, Canada and Yukon, Canada) (Historic Civil Engineering Landmark status) (operating)ArizonaLegend City Railroad (located in Legend City) (defunct) Magma Arizona Railroad (converted to standard gauge) (defunct) Mohave and Milltown Railway (defunct) Superstition Narrow Gauge Railroad (located in Goldfield Ghost Town) (operating) United Verde & Pacific Railway (defunct)ArkansasArkansas Midland Railroad (1883-1887, then converted to standard gauge) (defunct) Batesville and Brinkley Railroad (1881-1888, then converted to standard gauge) (defunct) Hot Springs Railroad (1876-1889, then converted to standard gauge) (defunct) Southwestern Arkansas and Indian Territory Railroad (1885-1891, then converted to standard gauge) (defunct)CaliforniaArdenwood Historic Farm (U.S. National Register of Historic Places status) (operating) Bodie and Benton Railway and Commercial Company (defunct) Borate and Daggett Railroad (dual gauge lines with standard gauge track also present) (defunct) California & Mt. Diablo Railroad (defunct) California and Nevada Railroad (defunct) California State Railroad Museum (standard gauge lines and dual gauge lines with standard gauge track also present) (all gauge trackage is dual-gauged with standard gauge trackage) (operating) Crystal Springs & Southwestern Railroad (located at the Travel Town Museum) (defunct - museum still operating) Death Valley Railroad (defunct) Deer Lake Park & Julian Railroad (located at the vacation home of Disney animator Ollie Johnston) (defunct) Delta Consolidated Mining Company (defunct) Diamond and Caldor Railway (defunct) Disneyland Railroad (located in Disneyland) (separate gauge railway named Casey Jr. Circus Train also present; and separate gauge railway named Mine Train Through Nature's Wonderland and separate gauge railway named Viewliner Train of Tomorrow previously present) (operating) Ghost Town & Calico Railroad (located in Knott's Berry Farm) (separate gauge railway named Calico Mine Ride and separate gauge railway named Grand Sierra Scenic Railroad also present) (operating) Grand Centennial Excursion Railroad (located in Six Flags Magic Mountain) (separate gauge railway named Orient Express also present and separate gauge railway named 99 Steam Train previously present) (defunct - park and first separate railway still operating) Great America Scenic Railway (located in California's Great America) (defunct - park still operating) Grizzly Flats Railroad (located at the home of Disney animator Ward Kimball) (influenced the design of the Disneyland Railroad) (defunct) Imperial Gypsum Company Railroad (defunct) Jolly Trolley (located in Disneyland) (separate gauge railway named Casey Jr. Circus Train also present; and separate gauge railway named Mine Train Through Nature's Wonderland and separate gauge railway named Viewliner Train of Tomorrow previously present) (defunct - park still operating) Justi Creek Railway (private) (adjacent to the home of and owned by Pixar and Walt Disney Animation Studios CCO John Lasseter) (the train from the Deer Lake Park & Julian Railroad and the depot building from the Grizzly Flats Railroad are incorporated) (operating) Laws Railroad Museum and Historic SiteLaws Railroad Museum and Historic Site - official website (operating) Main Street Vehicles (located in Disneyland) (separate gauge railway named Casey Jr. Circus Train also present; and separate gauge railway named Mine Train Through Nature's Wonderland and separate gauge railway named Viewliner Train of Tomorrow previously present) (operating) Monterey and Salinas Valley Railroad (converted to standard gauge Monterey Branch Line) Nevada County Narrow Gauge Railroad (defunct) Nevada County Narrow Gauge Railroad & Transportation Museum (operating) Neverland Valley Railroad (located in Neverland Ranch, Michael Jackson's home and amusement park) (separate gauge railway also present) (defunct) North Pacific Coast Railroad (defunct) Northwestern Pacific Railroad (standard gauge lines also present) (dual gauge lines with standard gauge track previously present) (defunct - standard gauge lines still operating) Pacific Coast Railroad (private) (operating) Pacific Coast Railway (defunct) Pacific Portland Cement Company (defunct) Roaring Camp & Big Trees Narrow Gauge Railroad (Historic Mechanical Engineering Landmark status shared between three locomotives) (operating) San Joaquin and Sierra Nevada Railroad (defunct) San Luis Obispo & Santa Maria Valley Railroad (defunct) Sandstone Crag Loop Line (private) (operating) Santa Cruz and Felton Railroad (defunct) Sonoma Valley Railroad (defunct) South Pacific Coast Railroad (defunct) Southern California Railway Museum (standard gauge lines, gauge lines, and dual gauge lines with standard gauge track and gauge track also present) (operating) Southern Pacific: narrow gauge system(defunct) USG Corporation (Midland facility) (defunct) USG Corporation (Plaster City facility) (private) (operating) Waterloo Mining Railroad (defunct) Watsonville Traction Company (defunct) West Side Lumber Company Railway (defunct) Yosemite Mountain Sugar Pine Railroad (operating)ColoradoArgentine Central Railway (defunct) Book Cliff Railroad (defunct) Colorado and Southern Railway (U.S. Class I railroad) (standard gauge lines also present) (dual gauge lines with standard gauge track previously present) (converted to standard gauge) (defunct) Colorado Central Railroad (crossed into Wyoming) (standard gauge lines also present) (defunct) Colorado Railroad Museum (dual gauge lines with standard gauge track also present) (operating) Como Roundhouse, Railroad Depot and Hotel Complex (operating) Cumbres & Toltec Scenic Railroad (former D&RGW line) Denver & Rio Grande Railroad (crossed into New Mexico) (standard gauge lines and dual gauge lines with standard gauge track also present) (partially converted to standard gauge) (defunct) Denver & Rio Grande Railway (crossed into New Mexico) (defunct) Denver & Rio Grande Western Railroad (U.S. Class I railroad) (standard gauge lines also present) (dual gauge lines with standard gauge track previously present) (converted to standard gauge) (defunct) Denver, Leadville and Gunnison Railway (defunct) Denver, South Park and Pacific Railroad (defunct) Durango & Silverton Narrow Gauge Railroad (former D&RGW branch line) (Historic Civil Engineering Landmark status) (U.S. National Historic Landmark status) (operating) Florence and Cripple Creek Railroad (defunct) Georgetown Loop Railroad (reconstructed C&S line) (U.S. National Historic Landmark status shared with nearby towns of Georgetown and Silver Plume) (operating) Gilpin Railroad ( gauge lines and dual gauge lines with gauge track also present) (all gauge trackage was dual-gauged with gauge trackage) (defunct) Greeley, Salt Lake and Pacific Railway (standard gauge lines also present) (defunct) Incline Railway (located in Royal Gorge Bridge & Park) (separate gauge railway named Silver Rock Railway also present) (closed) Little Book Cliff Railway (defunct) Manitou Incline (defunct) Midland Terminal Railway (converted to standard gauge) (defunct) Rio Grande Southern Railroad (defunct) Silverton, Gladstone and Northerly Railroad (defunct) Silverton Northern Railroad (defunct) Silverton Railroad (defunct) Uintah Railway (crossed into Utah) (defunct)ConnecticutConnecticut Antique Machinery Association (operating)FloridaFlorida Midland Railway (converted from standard gauge) (defunct) Florida Southern Railroad (standard gauge lines also present) (converted to standard gauge) (defunct) Florida Southern Railway (partially converted to standard gauge) (defunct) Fort Meade Street Railway (defunct) Great America Railway (located in Kirby Family Farm) (operating) Green Cove Springs and Melrose Railroad (defunct) Jacksonville and Atlantic Railroad (defunct) Jacksonville, St. Augustine and Halifax River Railway (converted to standard gauge) (defunct) Jupiter and Lake Worth Railway (defunct) Leesburg Transfer Company (defunct) Main Street Vehicles (located in Magic Kingdom) (operating) Orange Belt Railway (defunct) Palatka and Heights Street Railway (defunct) Petticoat Junction Railroad (located in Petticoat Junction Amusement Park) (defunct) Pioneer & Western Railroad (located in Pioneer City) (defunct) Sanford and St. Petersburg Railroad (partially converted to standard gauge) (defunct) Serengeti Express (located in Busch Gardens Tampa) (operating) South Florida Railroad (converted to standard gauge) (defunct) Southern Railway & Six Gun (located in Six Gun Territory) (defunct) St. Johns & Halifax Railway (defunct) St. Johns & Halifax River Railway (converted to standard gauge) (defunct) St. Johns & Lake Eustis Railway Company (defunct) Walt Disney World Railroad (located in Magic Kingdom) (operating) Wildlife Express Train (located in Disney's Animal Kingdom) (operating)GeorgiaAmericus, Preston and Lumpkin Railroad (defunct) Augusta, Gibson and Sandersville Railroad (defunct) Bowden Lithia Springs Short Line Railroad (defunct) Chattanooga, Rome and Columbus Railroad (converted to standard gauge) (defunct) Cherokee Railroad (converted from gauge) (defunct) Columbus and Rome Railway (defunct) Gainesville, Jefferson and Southern Railroad (defunct) Hartwell Railway (defunct) North and South Railroad of Georgia (defunct) Roswell Railroad (defunct) Savannah, Americus and Montgomery Railway (crossed into Alabama) (converted to standard gauge) (defunct) Six Flags Railroad (located in Six Flags Over Georgia) (operating) Vulcan Steam Train (located at the Georgia Museum of Agriculture & Historic Village) (operating)HawaiiHawaiian Railway Society (remnant of a former OR&L main line) (operating) Kahului Railroad (defunct) Kauai Plantation RailwayKauai Plantation Railway - official website (operating) Lahaina, Kaanapali & Pacific Railroad (defunct) Oahu Railway and Land Company (U.S. National Register of Historic Places status) (defunct) Waimanalo Sugar Company (defunct)IdahoSilverwood Central Railway (located in Silverwood Theme Park & Boulder Beach Water Park) (operating) Coeur d'Alene Railway and Navigation Company (defunct) Kalispell Creek Railroad (defunct)IllinoisDanville, Olney and Ohio River Railroad (defunct) Galena and Southern Wisconsin Railroad (crossed into Wisconsin) (defunct) Great America Scenic Railway (located in Six Flags Great America) (operating)IndianaFrankfort and Kokomo Railroad (converted from standard gauge) (defunct) Hesston Steam Museum ( gauge lines and dual gauge lines with gauge track also present) (all gauge trackage is dual-gauged with gauge trackage) (separate gauge railway and separate gauge railway also present) (operating)IowaBurlington and Northwestern Railway (defunct) Fenelon Place Elevator (U.S. National Register of Historic Places status) (operating)