Sec. 10. (a) Upon receipt of the annual certification from the county auditor, the state comptroller shall distribute from the county highway engineer fund to each county a grant-in-aid subsidy of forty thousand dollars ($40,000) that is to be applied toward the engineer's annual salary. If the county highway engineer is employed by two (2) counties acting jointly, the amount distributed to each county is forty thousand dollars ($40,000).
(b) The state comptroller shall distribute the grant-in-aid subsidies from the county highway engineer fund on a schedule determined by the state comptroller.