Tennessee State Route 140 runs in western and northern Henry County. It starts at McKenzie, and runs north to the northwestern part of the county. North of Cottage Grove, and west of Puryear, TN St Rt 140 runs east-west to U.S. Rt. 79/Tennessee State Route 76, near Kentucky Lake. TN St Rt 140 passes through the following towns in Henry County. McKenzie Como Cottage Grove