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  2. Robertson Tunnel - Wikipedia

    en.wikipedia.org/wiki/Robertson_Tunnel

    The tunnel is 2.9 miles (4.7 kilometers) long [1] and consists of twin 21-foot-diameter (6.4 m) tunnels. There is one station within the tunnel at Washington Park, which at 259 feet (79 m) deep is the deepest subway station in the United States and the fifth-deepest in the world. [5]

  3. 191st Street station - Wikipedia

    en.wikipedia.org/wiki/191st_Street_station

    The tunnel street cost $76,000, with $5,000 provided by the IRT and the remainder levied on the neighborhood property owners at their request. [23] [24] Engineers found the construction of the tunnel to be feasible since the subway platforms would be on almost the same level as Broadway. [25]

  4. List of longest tunnels - Wikipedia

    en.wikipedia.org/wiki/List_of_longest_tunnels

    #1 Tunnel, Yellow River Diversion to Shanxi North Line Shanxi, China 43,670 m (27.135 mi) 2011 See South–North Water Transfer Project: Water supply #7 Tunnel, Yellow River Diversion to Shanxi South Line Shanxi, China 43,500 m (27.030 mi) 2002 See South–North Water Transfer Project: Metro Beijing Subway Line 8: Beijing, China

  5. List of tunnels in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_tunnels_in_the...

    New York City Subway tunnels: Fort George Tunnel, IRT Broadway–Seventh Avenue Line (1 train), 2 miles of rock tunnel from 157th Street to Dyckman Street, the second-longest two-track tunnel in the country (after the Hoosac Tunnel) when completed in 1906. 14th Street Tunnel, BMT Canarsie Line (L train) under East River between Manhattan and ...

  6. 63rd Street Tunnel - Wikipedia

    en.wikipedia.org/wiki/63rd_Street_Tunnel

    The 63rd Street Tunnel is a double-deck subway and railroad tunnel under the East River between the boroughs of Manhattan and Queens in New York City. Opened in 1989, it is the newest of the East River tunnels, as well as the newest rail river crossing in the New York metropolitan area .

  7. Tunnel construction - Wikipedia

    en.wikipedia.org/wiki/Tunnel_construction

    Tunnel Construction. Tunnels are dug in types of materials varying from soft clay to hard rock. The method of tunnel construction depends on such factors as the ground conditions, the ground water conditions, the length and diameter of the tunnel drive, the depth of the tunnel, the logistics of supporting the tunnel excavation, the final use and shape of the tunnel and appropriate risk management.

  8. 127-year-old water main gives way under NYC's Times Square ...

    www.aol.com/news/127-old-water-main-gives...

    A 127-year-old water main under New York's Times Square gave way early Tuesday, flooding midtown streets and the city's busiest subway station. The 20-inch (half-meter) pipe gave way under 40th ...

  9. 60th Street Tunnel - Wikipedia

    en.wikipedia.org/wiki/60th_Street_Tunnel

    The 60th Street Tunnel ... handle the additional weight of subway trains; thus, the tunnel was ... new East River tunnels, being over 100 feet (30 m) deep in sections