Location: US-421 and SR 44, Sullivan Cty A mile later, we’ll approach the SR 44 split. Location: US-421 and SR 44, Sullivan Cty Turn left for 44 north to I-81 (in Virginia) via VA 75. Stay straight for 421 south/34 east.  S to TN-91/TN-133, N to TN-44  E to TN-91/TN-133, W to TN-44  N to … Continue reading U.S. Route 421, TN-435 to TN-44