Massman Construction Co. was awarded a contract from the US Army Corps of Engineers for a major rehabilitation of Lock and Dam 24 on the Mississippi River.

The work involved removal and replacement of the top 18 feet of the lock walls, removal and replacement of the auxiliary lock miter gates, dewatering of the lock, installation of new bulkhead slots, installation of a bubbler system, tow haulage system improvements, additions to the control building and electrical work. The work was performed over a 3-year period, however, the majority of the work occurred during three winter-time lock closures: one 60-day closure and two 90-day closures.

The project involved significant concrete removal and replacement of the lock river wall, as well as removal of the rock dike and installation of bulkhead slots in the auxiliary lock.