sentences:  The route is a two-lane road for most of its length, but the segment between Winston-Salem and Thomasville is being upgraded to a divided 4-lane highway, as it is a major route between the two cities.The central segment of NC 109 passes through the Uwharrie Mountains and the Uwharrie National Forest.North Carolina Highway 109 begins at the North Carolina-South Carolina border north of Ruby, South Carolina.