Cone Zone: Updates on D.C.-area work zones



Cone Zone: Updates on D.C.-area work zones

  • Subterranean DC Water project set to close road for years 

    Posted by WTOP/Dave Dildine
    May 20, 2019
    A giant machine is churning under Northeast D.C. You can't feel it or see it. But now there is evidence of it above ground.
    DC Water's huge subterranean infrastructure project will block a surface street between Bloomingdale and Shaw in Northwest Washington for years.
    A portion of 3rd Street Northwest between Florida Avenue and Rhode Island Avenue will be closed until 2022 with the Northeast Boundary Tunnel project in full bore. The road closure is scheduled to go into effect on Tuesday.
    In the coming years, a drop shaft will be constructed along 3rd Street. It's one of several work sites outlining the tunnel project, which stretches for more than five miles toward the Anacostia River.
    Over the past several months, utility relocation and minor demolition work has been done along Rhode Island Avenue and other nearby streets in preparation for the latter phases of construction.
    Last summer, an enormous boring machine was lowered into a deep shaft near RFK Stadium. Since then, the excavator has slowly churned under Kingman Park on a path toward Trinidad and Brentwood.
    Chris, the tunnel boring machine that's at work under Northeast D.C. (WTOP/Dave Dildine)
    The cylindrical machine has moved at an average pace of 11 to 12 feet per day. According to DC Water, the machine has churned through about 3,550 feet of earth under Lot 7 at RFK Stadium.
    From the stadium and Kingman Park, the machine will chug inbound underneath Mount Olivet Road and Rhode Island Avenue at depths exceeding 100 feet over the next few years.
    Once complete, DC Water hopes, the Northeast Boundary Tunnel will divert 98 percent of combined sewer overflow away from the Anacostia River and toward the Blue Plains Treatment Plant.
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