The Baltimore and Ohio Railroad was the first common carrier railroad and the oldest railroad in the United States, with its first section opening in 1830. Merchants from the city of Baltimore, which had benefitted to some extent from the construction of the National Road early in the century, wanted to continue to compete for trade with trans-Appalachian settlers with the newly constructed Erie Canal, another canal being proposed by Pennsylvania, the Chesapeake and Ohio Canal, and the James River Canal, which directed traffic toward Richmond and Norfolk, Virginia. At first the B&O was located entirely in the state of Maryland, its original line extending from the port of Baltimore west to Sandy Hook. There it connected with Harper's Ferry across the Potomac into Virginia, and also with the navigable Shenandoah River.
The Blue Line is a rapid transit line of the Washington Metro system, consisting of 27 stations in Fairfax County, Alexandria and Arlington, Virginia; the District of Columbia; and Prince George's County, Maryland, United States. The Blue Line runs from Franconia–Springfield to Largo Town Center. The line shares tracks with the Orange Line for 13 stations, the Silver Line for 18, and the Yellow Line for six. Only three stations are exclusive to the Blue Line.
The Richmond, Fredericksburg, and Potomac Railroad was a railroad connecting Richmond, Virginia, to Washington, D.C. The track is now the RF&P Subdivision of the CSX Transportation system; the original corporation is no longer a railroad company.
The Western Maryland Railway was an American Class I railroad (1852–1983) which operated in Maryland, West Virginia, and Pennsylvania. It was primarily a coal hauling and freight railroad, with a small passenger train operation.
The Capital Subdivision is a railroad line owned and operated by CSX Transportation in the U.S. state of Maryland and the District of Columbia. The line runs from near Baltimore, Maryland, southwest to Washington, D.C., along the former Baltimore and Ohio Rail Road (B&O) Washington Branch. The subdivision's Alexandria Extension provides a connection to Virginia and points south.
The Baltimore and Potomac Railroad (B&P) operated from Baltimore, Maryland, southwest to Washington, D.C., from 1872 to 1902. Controlled by the Pennsylvania Railroad, it was the second railroad company to connect the nation's capital to the Northeastern States, and competed with the older Baltimore & Ohio Railroad.
Potomac Yard is a neighborhood in Northern Virginia that straddles southeastern Arlington County and northeastern Alexandria, Virginia, located principally in the area between U.S. Route 1 and the Washington Metro Blue Line /Yellow Line tracks. The area was home to what was once one of the busiest rail yards on the Eastern Seaboard of the United States. The "Potomac Yard" name is also used to refer to several developments in the area, especially the Potomac Yard Retail Center strip mall and a planned Washington Metro rail station.
The Harrisburg Subdivision is a railroad line owned by CSX Transportation in the U.S. state of Pennsylvania. The line is located in the city of Philadelphia, connecting Greenwich Yard and the Philadelphia Subdivision with the Trenton Subdivision along a former Pennsylvania Railroad line. Much of the Harrisburg Subdivision is the High Line or West Philadelphia Elevated along 31st Street over the 30th Street Station area.
The West Philadelphia Elevated, also known as the High Line or Philadelphia High Line, is a railroad viaduct in the western part of Philadelphia, Pennsylvania. The 8,140-foot (2,480 m) structure spans the railway lines of 30th Street Station, parallel to the main track of the station, in a north-south direction. The 1,045-foot (319 m) long approach made of brick arches is the longest brick bridge and probably even the longest brick building in the United States.
The Metropolitan Subdivision is a railroad line owned and operated by CSX Transportation in the District of Columbia and the U.S. state of Maryland. The line runs from Washington, D.C., northwest to Weverton, Maryland, along the former Metropolitan Branch of the Baltimore and Ohio Railroad.
The Cumberland Subdivision is a railroad line owned and operated by CSX Transportation in the U.S. states of Maryland and West Virginia. The line runs from Brunswick, Maryland, west to Cumberland, Maryland, along the old Baltimore and Ohio Rail Road (B&O) main line. At its east end, the Cumberland Subdivision becomes the Metropolitan Subdivision; at its west end at Cumberland, Maryland it becomes the Cumberland Terminal Subdivision. It meets the Shenandoah Subdivision at Harpers Ferry, West Virginia, and the Lurgan Subdivision at Cherry Run, West Virginia.
The Pope's Creek Subdivision is a CSX Transportation railroad line in Maryland, running from Bowie to Morgantown where the Morgantown Generating Station is located and the Chalk Point Generating Station.
The Fredericksburg Line is a commuter rail line operated by Virginia Railway Express between Washington, D.C. and Fredericksburg, VA. Virginia Railway Express operates 7 weekday trains, and Amtrak trains serve a few of the stations on the line. Trackage is owned by CSX as part of their RF&P Subdivision.
The Anacostia Railroad Bridge is a vertical lift railroad bridge crossing the Anacostia River in Washington, D.C., United States. The bridge is owned by CSX Transportation.
The Baltimore and Ohio Railroad Crossings at the Potomac River are a set of railroad bridges that span the Potomac River between Sandy Hook, Maryland, and Harpers Ferry, West Virginia, in the United States.
The Chesapeake Beach Railway (CBR), now defunct, was an American railroad of southern Maryland and Washington, D.C., built in the 19th century. The CBR ran 27.629 miles from Washington, D.C., on tracks formerly owned by the Southern Maryland Railroad and then on its own single track through Maryland farm country to a resort at Chesapeake Beach. It was built by Otto Mears, a Colorado railroad builder, who planned a shoreline resort with railroad service from Washington and Baltimore. It served Washington and Chesapeake Beach for almost 35 years, but the Great Depression and the rise of the automobile marked the end of the CBR. The last train left the station on April 15, 1935. Parts of the right-of-way are now used for roads and a future rail trail.
The Landover Subdivision is a railroad line owned and operated by CSX Transportation. It runs from the Anacostia section of Washington, D.C., to Landover, Maryland, serving as a freight train bypass of Washington Union Station.
The RF&P Subdivision is a railroad line owned and operated by CSX Transportation. It runs from Washington, D.C., to Richmond, Virginia, over lines previously owned by the Pennsylvania Railroad and the Richmond, Fredericksburg and Potomac Railroad. The line's name pays homage to that railroad, which was a predecessor to the CSX.
Long Bridge is the common name used for a series of three bridges connecting Washington, D.C. to Arlington, Virginia over the Potomac River. The first was built in 1808 for foot, horse and stagecoach traffic. Bridges in the vicinity were repaired and replaced several times in the 19th century. The current bridge was built in 1904 and substantially modified in 1942 and has only been used for railroad traffic. It is owned by CSX Transportation and is used by CSX freight trains, Amtrak intercity trains, and Virginia Railway Express commuter trains. Norfolk Southern Railway has trackage rights on the bridge but does not exercise those rights. In 2019 Virginia announced that it would help fund and build a new rail bridge parallel to the existing one to double its capacity, following the plans that have been studied by the District Department of Transportation (DDOT) and Federal Railroad Administration (FRA) since 2011.
The Washington District is a Norfolk Southern Railway line in Virginia connecting Alexandria to Lynchburg. Most of the line was originally constructed during 1850–1860 by the Orange and Alexandria Railroad, with a small portion in the center opened in 1880 as the Charlottesville and Rapidan Railroad. The line is mainly used for freight service, but Amtrak's Crescent and Cardinal passenger services use all or part the line, and the Virginia Railway Express Manassas Line commuter service uses the northernmost portion of the line.
