Tennessee State Route 321 is a north-south highway east of Chattanooga. This a surface alternate to the busy Interstate 75 in and out of Georgia. TN St Rt 321 passes through the following town. Ooletwah TN St Rt 321 is not multi-plexed in Hamilton County. TN St Rt 321 intersects the following in Hamilton County. Georgia State Route 151, at the Georgia/Tennessee State Line. Tennessee State Route 320, near Chattanooga. Tennessee Route 317, near Chattanooga. U.S. Rt. 11, near Oolewah. U.S. Rt. 64, near Oolewah. Tennessee State Route 2, near Oolewah.
Mile marker at the Georgia/Tennessee State Line. NB TN St Rt 321 at TN Sec St 320.
