Accelerating Flood Relief

by Ravi Jain, P.E., (M.ASCE), Lead Structural Engineer; WSP\Parsons Brinckerhoff, New York City, NY,
Ivan Hee, P.E., Senior Engineer; Skanska, Los Angeles, CA,
Stephen Njoloma, P.E., Lead Associate; Jacobs Associates, Washington, DC,
William Levy, P.E., Tunnel Program Manager; DC Water, Washington, DC,
Mina Shinouda, (A.M.ASCE), Project Manager; Jay Dee Contractors, Seattle, WA,

Serial Information: Civil Engineering—ASCE, 2016, Vol. 86, Issue 10, Pg. 66-73,84

Document Type: Feature article

Abstract: To expedite flood relief in two neighborhoods, the District of Columbia Water and Sewer Authority accelerated the design and construction of the approximately 2,700 ft long First Street Tunnel, which can store up to 9 million gallons of stormwater and wastewater that otherwise would overwhelm the city’s combined sewer system. To be completed this month, construction of the tunnel and its appurtenant facilities included ground freezing in several locations to minimize untoward effects on the dense urban neighborhood above.

Subject Headings: Floods | Residential location | Tunnels | Water storage | Sewers | Highway and road design | Hydraulic design | Construction wastes | District of Columbia | United States | North America

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