640 ton, 26 ft. diameter TBM Ready for Lowering Down Shaft
TBM “Nannie” Lowering Down CSO-019S Shaft
The D.C. Water Anacostia River Tunnel is a 12,300 ft. long combined sewer overflow tunnel with an inside finished diameter of 23 ft. Excavated in soft ground, this tunnel has already diverted billions of gallons of water and tons of trash that used to pollute the Anacostia and Potomac Rivers every time it rained.
Keller
Argentina
Beacon Hill
Blue Plains
Blue Plains
Brightwater
Cover
Drilling
Drilling
Drilling
Dugway Cleaveland
First Street
First Street
First Street
NBX
NBX
NBX
NBX
NBX
NBX
Northgate
Northgate
Northgate
NYC No. 3
OARS3
Westside
Westside
Westside
Atkinson
Bellwood Water Supply Tunnel Atlanta
Bellwood Water Supply Tunnel Atlanta
Bellwood Water Supply Tunnel Atlanta
MTA Capital Construction
T301 TUNNEL REBAR > N FROM BACK OF HOUSE
50TH ST. ADIT ARCH REBAR BETWEEN 301 AND 302 TUNNELS > E
T303 SOUTH WATERPROOFING > S
53RD ST. SUMP – INTERMEDIATE SLAB > W
T401 TUNNEL BETWEEN BACK OF HOUSE & 50TH ST. > N
GCT3 CROSSOVER – CIR ROOM EXTERIOR WALL > NE
GCT3 CROSSOVER – SOUTH END WALL > S
GCT3 CROSSOVER – OUTER FACE REBAR > NW
GCT3 CROSSOVER – NORTH END WALL > N
WB3 SUPPORT CLASS 3 SECTIONS > N
WC – SBOH – DRILLED REBAR DOWELS FOR COLUMNS > S
Completed excavation of the Westbound Bypass’ West Approach
ESA Caverns Drilling for Elevator Piston
ESA East Cavern SBOH
Mezzanine level precast beams being installation commenced
Subsurface construction of the future 48th Street Entrance
