Ind. Code § 36-9-27-81

Sec. 81. The county surveyor may, without first obtaining the approval of the board, authorize partial or progress payments to a contractor for work performed in amounts not in excess of eighty-five percent (85%) of the contract price of the work then completed. The county surveyor shall report such an approval to the board at its next meeting. The county surveyor may not give an approval under this section unless the county surveyor has first inspected the work done.