On February 9, 2006, TDOT announced that the realignment of the final segment of I-840 had been chosen and that work on the unfinished sections would proceed. The first contract for construction of the segment between SR 100 and SR 46 was re-awarded on June 1, 2007, and construction on I-840 resumed the following month. This segment opened on October 27, 2010. The contract for the segment between Leiper's Creek Road and US 31 was awarded on December 12, 2008, and on February 19, 2010, TDOT awarded the final construction contract for I-840, the segment between SR 46 and Leiper's Creek Road. These two segments, the final of I-840, were opened on November 2, 2012. The project took 26 years to complete and cost $753.4 million (equivalent to $ in ).