Heavy Civil

New Modern Lock Improves Efficiency

A new lock chamber was constructed on the Kanawha River – nine miles upstream from Charleston, West Viriginia. This new lock chamber gave much needed additional capacity to the two existing lock chambers constructed in 1934.

Inside the project

Kokosing joined efforts with Fru-Con Construction Corp., as part of a joint-venture, on this more than six-year, U.S. Army Corp. of Engineers project outside Charleston, West Virginia. Construction of the 110-foot-by-800-foot lock chamber entailed Kokosing moving 2.9-million cubic yards of earth and 107,000 cy of rock. In the piling portion of the project, Kokosing installed 216,000 linear feet of flat sheet piling and value-engineered the installation of 105,000 lf of Z-piling. In self-performing the concrete work, Kokosing installed and operated an on-site batch plant, which batched, hauled and placed 320,000 cubic yards of concrete.

Why it matters

The addition of the new lock reduced schedule delays for barges using these, the busiest locks in the Ohio River System. The larger lock allows many more barges to be processed at once, thus increasing speed and efficiency.