Huntsville 's town center is situated along Tennessee State Route 63 ( Howard Baker Highway ) .
The town 's municipal boundaries stretch westward to Tennessee State Route 63     's junction with U.S. Route 27 .
Huntsville 's town center is situated along Tennessee State Route 63 ( Howard Baker Highway ) , although the town 's municipal boundaries stretch westward to TN - 63 's junction with U.S. Route 27 .