Locks and Dams

AECOM Wins Big Chickamauga Contract

The Corps of Engineers awarded AECOM Energy & Construction Inc. a contract worth $240 million to act as the main contractor for major work on the construction of the Chickamauga Lock and Dam.

The work as specified by the contract includes building an on-site batch plant and concrete conveyance testing facilities. AECOM will have to excavate 9,900 cubic yards of rock and demolish about 3,600 cubic yards of existing concrete spillway. It will have to install 43 reinforced concrete drilled shafts ranging up to 46 feet long.

The work will require the installation of a chamber grout curtain; the transportation, handling and installation of miter gate sections, culvert valves and other items; construction of a new 6,633-square-foot operations building and gate operation control shelters; the installation of electrical and mechanical systems to support the lock and operation building; and the operation and maintenance of an automated instrumentation system comprised of bi-axial tilt meters, piezometers, etc. with associated data loggers and cell phone transmission system.

The last item on the 12-item list is “commissioning of a new lock.”

AECOM is a global engineering and design firm that was ranked Number 1 in Engineering News Record‘s “Top 500 Design Firms” for eight consecutive years.