Tennessee Valley Authority Address: S Highway 431, Belfast, TN 37019 Phone: (931) 276-2425 Federal Government-Conservation Depts Other Businesses: Tennessee Valley Authority at 2441 Polly Adams Rd, Belfast, TN 37019 First National Bank at 1600 Fishing Ford Rd, Belfast, TN 37019 Arnold Unlimited at 1793 Fayetteville Hwy, Belfast, TN 37019