Necc Carter County Annex 188 Old Railroad Grade Rd Roan Mountain, TN 37687 Phone : (423) 772-3231 Business Category Government Offices-State Legislative Bodies Tennessee State Of--carter County Work Camp, Railroad Grade Rd Roan Mountain, TN 37687 Phone : (423) 772-3231 Business Category Government Offices-State Government Offices State & Local Government Offices & Public Schools Tennessee State Of--carter County Work Camp Railroad Grade Rd Roan Mountain, TN 37687 Phone : (423) 772-3231 Business Category Government Offices-State Government Offices State & Local Government Offices & Public Schools