SR 515 begins just west of Nelson and just north of the Cherokee-Pickens County line, at the convergence of the northern terminus of Interstate 575, SR 5, the northern terminus of SR 5 Business, and the northern terminus of SR 372. It is concurrent with SR 5 from its southern terminus to Blue Ridge. It is also concurrent with US 76 from East Ellijay to a point between Young Harris and Hiawassee. It maintains a fairly strict south-north routing from its southern terminus to Blue Ridge and then becomes a due east-west route for the remainder of its length.