Railroad line

Angels Flight Railway (Los Angeles County, California)
Funicular railroad up Bunker Hill

Arcade and Attica Railroad (Wyoming County, New York)
Passenger railroad running excursions on a historical right-of-way

Brockway Passenger Depot R&P RR (Jefferson County, Pennsylvania)

Camas Prairie Railroad (Idaho County, Idaho)

Camden and Amboy Railroad Right of Way Site (Mercer County, New Jersey)

Cass Scenic Railroad (Pocahontas County, West Virginia)

Chesterfield and Lancaster Railroad (Chesterfield County, South Carolina)
Little known railroad has been gone for more than 70 years

Chicago Middleton Depot Milwaukee, and St. Paul Railroad (Dane County, Wisconsin)

Chicago West Madison Depot Milwaukee, and St. Paul Railway (Dane County, Wisconsin)

Chippewa Valley Railroad (Eau Claire County, Wisconsin)
1/2 mile loop of track supporting a 1/4 scale recreational railroad

Comanche Crossing of the Kansas Pacific Railroad (Arapahoe County, Colorado)

Copper River and Northwestern Railway (Valdez-Cordova Census Area, Alaska)

Council City and Solomon River Railroad (Nome Census Area, Alaska)

Creede Branch, Denver and Rio Grande Railroad (Rio Grande County, Colorado)

East Broad Top Railroad (Huntingdon County, Pennsylvania)

Elkins Railroad Station, Philadelphia and Reading Railroad (Montgomery County, Pennsylvania)

Grand Canyon Railway (Coconino County, Arizona)

Harris Switch Tower, Pennsylvania Railroad (Dauphin County, Pennsylvania)

Hocking Valley Railway Historic District (Hocking County, Ohio)

Howard Tunnel, Northern Central Railway (York County, Pennsylvania)

Johnstown Inclined Railway (Cambria County, Pennsylvania)

Lancaster and Chester Railway (Lancaster County, South Carolina)
Long running South Carolina shortline railroad

Lookout Mountain Incline Railway (Hamilton County, Tennessee)

Mauch Chunk and Summit Hill Switchback Railroad (Carbon County, Pennsylvania)

N&W #611 (Roanoke, Virginia)
Famous steam engine waits to steam again... maybe...

New Freedom Railroad Station, Northern Central Railway (York County, Pennsylvania)

New York Starlight Station Ontario, and Western Railway (Wayne County, Pennsylvania)

Pickens Railroad (Pickens County, South Carolina)
Historic South Carolina shortline now abandoned

Plano Station, Texas Electric Railway (Collin County, Texas)

Quincy Granite Railway (Norfolk County, Massachusetts)

Riverside & Great Northern Railway (Juneau County, Wisconsin)
15" Guage Steam Railroad Running at the site of former Sandley Light Railway Works

Saluda Grade (Polk County, North Carolina)
The Steepest Mainline Railroad Grade in America.

Sandown Depot, Boston and Maine Railroad (Rockingham County, New Hampshire)

Sebastopol Depot of the Petaluma and Santa Rosa Railway (Sonoma County, California)

Shrewsbury Railroad Station, Stewartstown Railroad (York County, Pennsylvania)

Southern Railway SB Line (York County, South Carolina)
A one time through line from Marion, NC to Kingville, SC. Segments still are in service while others are abandoned and left in place or taken up entirely.

Station and General Office, California Southern Railroad (San Diego County, California)

Stewartstown Engine House, Stewartstown Railroad (York County, Pennsylvania)

Strasburg Rail Road (Lancaster County, Pennsylvania)
Heritage railroad located near Strasburg, Pennsylvania

Sumpter Valley Railway (Baker County, Oregon)
Narrow gauge railway built between 1890 and 1910

Whiting River Arches (Litchfield County, Connecticut)
Stone arches providing passage of road and river through earthen fill.

William Gillette's Railroad (Middlesex County, Connecticut)
A miniature railroad built on the estate of William Gillette.

Wilmington and Western Railroad (New Castle County, Delaware)