Boundary Tunnel Project First Street
NW Pumping Station Construction Site Newsletter June 4,
DC Water's contractor
will begin 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 Boundary Tunnel.
Work is expected to begin the week of
June 10, 2019, from 7 AM – 7 PM, Monday – Friday, and
will continue for approximately eight (8) months (weather
Rhode Island 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
Parking will be restricted on the north and south
sides of Rhode Island Avenue, NW between North
Capitol Street and 2nd Street, NW.
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 north side crosswalk at the intersection of
First Street and Rhode Island Avenue, NW will be closed.
The eastbound crosswalk on Rhode Island Avenue, NW
at First Street will be closed. Detour signs will be posted to
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%.