Explore: Subway Tunnels

than 2 miles (3.2 km) in length, its derelict tunnels and stations make up the largest abandoned subway tunnel system in the United States. Construction began

from the Works Progress Administration to fund the construction of two subway tunnels, the first of which would be built beneath State Street and the second

and Joralemon tunnels had been repaired, in addition to the Crosstown, Montague Street, and Clark Street tunnels. The Rutgers Street Tunnel was pending

railway tunnels in China List of longest subway tunnel sections List of long tunnels by type List of longest tunnels Two tracks in the first 574 m "Korea

line's tunnels will largely consist of twin tunnels with diameters of up to 23.5 feet (7.2 m). About 90% of the tunneling is to be performed by tunnel boring

The Market Street subway is a two-level subway tunnel that carries Muni Metro and BART trains under Market Street in San Francisco, California. It runs

new subway tunnels was hauled away by the Chicago Tunnel Company as the subway replaced the freight tunnels along their route. The Chicago Tunnel Company

built by Alfred Ely Beach between 1869 and early 1870 as a demonstration subway line running on pneumatic power. The original terminus resided in the basement

were constructed in a cut-and-cover tunnel that became Broad Street, and the only underground portion of the subway. The railroad was designed to reduce

significant damage to New York City, and many subway tunnels were inundated with floodwater. The subway opened with limited service two days after the