Northeast Boundary Tunnel Project First Street
NW Pumping Station Construction Site Newsletter August 9,
What have we been up to at the First Street NW Pumping
Station Construction Site?
Discovered a damaged District Department
of Transportation (DDOT) conduit that needed immediate
replacement. This resulted in delays in our original work
Applied for DDOT permits to do conduit
Constructed a new conduit across Rhode
Island Ave NW.
Finally able to set up our fence and site
on Rhode Island Avenue, NW.
Relocate/Bypass existing utilities within
Start jet grouting.
DC Water's contractor will begin preparations for
jet grouting work at the intersection of First Street and
Rhode Island Avenue, NW, as a continuation of work associated with
the Northeast Boundary Tunnel Project. The contractor will
install jet grout columns on the north side of the intersection at
First Street and Rhode Island Avenue, NW. One method of
stabilizing the soil on the Northeast Boundary Tunnel Project is a
process known as jet grouting, a method of ground improvement that
involves injecting cement and water into the soil at very high
pressures to solidify and strengthen the ground. The improved
ground will allow safe excavation in the stabilized ground to
connect the existing First Street Tunnel with the new Northeast
Work is expected to begin the week of August
12, 2019, from 7 AM – 7 PM, Monday – Friday, and will
continue for approximately eight (8) months (weather permitting).
Avenue, NW between 2nd Street, NW and North Capitol Street, NW
will be reduced to two lanes of traffic in each direction.
First Street NW
between Thomas Street and Rhode Island Avenue will be closed
to northbound traffic. Detour signs will be in place to direct
traffic to 2nd Street, NW.
Parking will be
restricted on the north and south sides of Rhode Island
Avenue, NW between North Capitol Street
and 2nd Street, NW to allow for the lane
There will also be
restrictions to parking on both sides of First Street, NW
between Thomas Street and Rhode Island Avenue, NW.
travel and parking restrictions on Rhode Island Avenue, NW and First
The crosswalks will
be closed at the intersection of First Street and Rhode
Island Avenue where the construction activities will take
place. Detour signs will be posted to direct pedestrians.
A new First Street
crosswalk will be installed near Thomas Street.
The sidewalk on the
south side of Thomas Street between the alley and First Street
will remain closed. Pedestrians must use the sidewalk
along the north side of Thomas Street.
Map of the
pedestrian detour on Rhode Island Avenue, NW and First Street, NW
The Northeast Boundary Tunnel is the largest component of the Clean
Rivers Project. It begins south of RFK Stadium and will extend
north to Rhode Island Avenue, NE and west to 6th Street
NW. When complete, the approximately five-mile long tunnel will
significantly reduce chronic flooding in areas it serves, as well
as reduce the amount of combined sewer overflows into the Anacostia
River by 98%.