SR 121 begins at a
diamond interchange with I-77, I-81, and US 11 a short distance west of the interchange where I-77 turns south toward
Charlotte and I-81 and US 11 continue east toward
Roanoke. US 52
runs concurrently with the three other highways west to
Wytheville and heads south from the interchange as Fort Chiswell Road toward
Hillsville. SR 121 starts as a four-lane
divided highway within the interchange but immediately reduces to a two-lane undivided road to head north to Max Meadows. The state highway crosses
Reed Creek before entering the village, where it reaches its northern terminus at its intersection with SR 1004 (Ayers Street) and SR 1006 (Max Meadows Road) immediately to the north of its grade crossing of
Norfolk Southern Railway's
Pulaski District rail line and one block south of SR 610 (Peppers Ferry Road). ==History==