NC 108 begins at US 176 in Tryon and travels east through the unincorporated town of Lynn, where it crosses the Pacolet River.

The section from Tryon to Mill Spring closely follows the front range of the Blue Ridge Mountains.

[2] The NCDOT I-4729 Feasibility Study was completed in 2006 and recommended improvements to NC 108 at its interchange with I-26 in Columbus, including widening the facility to four lanes.

Section B will improve NC 108, including the construction of a new structure across I-26, but will only add a center turn lane west of the interchange.

[5] The Comprehensive Transportation Plan Study Report for Polk County, completed in October 2008 by the Transportation Planning Branch of the NCDOT, recommended upgrading NC 108 to a four-lane divided facility from its western terminus at US 176 in Tryon to the US 74 interchange east of Columbus.