The First Street Tunnel is a two-track, soft-earth

tunnel A tunnel is an underground or undersea passageway. It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ve ...

built between 1904 and 1906 by the

Washington Terminal Company The Washington Terminal Company is a corporation created in Washington, D.C., United States, to provide support to railroads using Washington's Union Station. It is now a nearly wholly owned subsidiary of Amtrak. It was established in 1901 by t ...

to serve as the southern approach to

Union Station A union station, union terminal, joint station, or joint-use station is a railway station at which the tracks and facilities are shared by two or more separate railway company, railway companies, allowing passengers to connect conveniently bet ...

in Washington, D.C. Currently owned by

Amtrak The National Railroad Passenger Corporation, Trade name, doing business as Amtrak (; ), is the national Passenger train, passenger railroad company of the United States. It operates intercity rail service in 46 of the 48 contiguous United Stat ...

, it connects to lower-level tracks and platforms at the station, passes under

Capitol Hill Capitol Hill is a neighborhoods in Washington, D.C., neighborhood in Washington, D.C., located in both the Northeast, Washington, D.C., Northeast and Southeast, Washington, D.C., Southeast quadrants. It is bounded by 14th Street SE & NE, F S ...

and connects to the RF&P Subdivision (

CSX Transportation CSX Transportation , known colloquially as simply CSX, is a Class I freight railroad company operating in the Eastern United States and the Canadian provinces of Ontario and Quebec. Operating about 21,000 route miles () of track, it is the lead ...

) and

Long Bridge Long may refer to: Measurement * Long, characteristic of something of great duration * Long, characteristic of something of great length * Longitude (abbreviation: long.), a geographic coordinate * Longa (music), note value in early music mens ...

, offering through railway service to

Alexandria, Virginia Alexandria is an independent city (United States), independent city in Northern Virginia, United States. It lies on the western bank of the Potomac River approximately south of Washington, D.C., D.C. The city's population of 159,467 at the 2020 ...

, and points west and south. Unlike the

Northeast Corridor The Northeast Corridor (NEC) is an electrified railroad line in the Northeast megalopolis of the United States. Owned primarily by Amtrak, it runs from Boston in the north to Washington, D.C., in the south, with major stops in Providence, Rhod ...

tracks north of Union Station, the tunnel tracks are not

electrified Electrification is the process of powering by electricity and, in many contexts, the introduction of such power by changing over from an earlier power source. In the context of history of technology and economic development, electrification refe ...

, so southbound trains leaving Union Station must switch to

diesel locomotive A diesel locomotive is a type of railway locomotive in which the prime mover (locomotive), power source is a diesel engine. Several types of diesel locomotives have been developed, differing mainly in the means by which mechanical power is con ...

s before entering the tunnel. Exiting Union Station, the tunnel runs due south under First Street NE and SE before curving to the southwest under a parking lot near the Capitol South Metro station. Its southern portal is just east of South Capitol Street at the intersection of D Street SE and New Jersey Avenue SE. The tunnel's height is . Paper No. 1180.

References

External links

BelowTheCapital.org
(Archived on Aug. 10th, 2019)

(Archive) Amtrak tunnels Railroad tunnels in Washington, D.C. Tunnels completed in 1906 1906 establishments in Washington, D.C. {{WashingtonDC-transport-stub

See also

References

External links