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  • March

    The precast, 115-tons culverts were brought in and lowered into place using a large A-frame crane. The 12-ft-high by 14-ft-wide by 34.5-ft-long precast culverts are stay-in elements within the new middle wall that will allow the future landside lock chamber to empty water from the chamber into the river.

    Massive Cross Culverts Installed at Charleroi Lock and Dam

    The U.S. Army Corps of Engineers Pittsburgh District successfully installed the two massive precast concrete cross culverts in the new middle wall at Monongahela River Lock and Dam 4 at Charleroi near Pittsburgh, Pa., Jan. 31.