 From May 2010 through April 2014, I-85 was widened from four to eight lanes between exit 49 (near Charlotte Motor Speedway and Concord Mills Mall) and Exit 55.Following the completion of the widening of I-85 between exits 49 and 55, a new project was started to widen I-85 from exit 55 (NC 73) in Concord, Cabarrus County northward to exit 68 (NC 152) in China Grove, Rowan County.Like the prior project, I-85 is being doubled in capacity, expanding from two travel lanes in each direction to four travel lanes in each direction.