Blue Plains Tunnel

CTLGroup provided mass concrete engineering consulting services for the Blue Plains Screening and Dewatering Shafts DC Clean Rivers Project in Washington, DC. The DC Clean Rivers Project consisted of a network of tunnels designed as part of a plan to manage combined sewer overflows for the District of Columbia Water and Sewer Authority (DCWASA). The tunnels were designed to carry wastewater to the Blue Plains Advanced Water Treatment Plant. As part of the Blue Plains Project, large elements were to be constructed and the specifications required that the large elements be treated as mass concrete. The elements included base slabs (“dome slabs”), invert slabs, and walls.


Civil Infrastructure

Materials & Products

Consulting Services

Mass Concrete & Thermal Control

Materials Science + Engineering

Laboratory Services

Concrete + Cement-Based Materials

Engineering News Record (ENR) 2016 Best Project Award recipient for the Mid-Atlantic Region for Water/Environment category.

Key experts on this project


Year of Completion


Hours Worked


Feet in Length

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