Tennessee Code Title 54. Highways, Bridges and Ferries § 54-7-115

(a) A county highway department is authorized to receive materials, property, services, funds or supplies for the benefit of the county highway department, which materials, property, services, funds or supplies shall be used or disbursed in good faith in accordance with the terms or conditions of the donation or reimbursement. Funds so received shall be paid into the office of the county trustee, credited to the county highway fund and disbursed according to law as other funds of the county highway department.

(b) The county highway department may adopt a policy to authorize private persons or entities to repair county roads to bring a road damaged by that person or entity up to the condition or standard of the road previous to the damage caused by the private person or entity.