TGM Constructors (Traylor/Granite/Massman) received letter of award dated September 24, 2002, for Lock Construction, McAlpine Lock Replacement Project, Louisville, Kentucky. The U.S. Army Corps of Engineers accepted the $221,441,468 bid that was submitted June 18, 2002. This 1,200-ft x 110-ft lock on the Kentucky bank side of the Portland Canal will be adjacent to the existing lock and dam, replacing a 600-ft auxiliary lock chamber in service since 1922 and an inactive 360-ft 2-stage lock chamber originally constructed in the 1870's. Originally construction of the new lock and access bridge was estimated to be complete in approximately 5 years.

Milestones in 2005 included completion of 145,000 cy of Roller Compacted Concrete (RCC), completion of the new two-lane high level access bridge over the new and existing locks, erection of the first two miter gates at the wharf, and start of lock control building construction. The bridge opened to traffic off the existing bascule and swing spans. Through the end of 2005, 164,500 cy of lock wall mass concrete was placed.

In 2006 and 2007 all work inside the cofferdam was completed including mass concrete, 27,000 cy of culvert and diffuser concrete, "dry" approach wall cells, miter gate and culvert valve erection, existing bridge demolition, the four control buildings, and mechanical work.  Electrical controls installation continued into 2008.  Lock operation was dry tested and the cofferdam was watered up in October 2007.

Cofferdam removal and Approach wall construction continued from September 2007 through 2008.  64 precast approach wall beams weighing approximately 270 TN each were erected in 13 days in August 2008.  Electrical security, sitework, and demobilization were completed through May 2009.  The project was accepted and substantially complete on April 1, 2009 (exactly six years after Notice to Proceed).

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