Ind. Code § 8-20-8-3
A petition to temporarily or permanently close or relocate a road must include:
(5) any detours or alternate routes needed to avoid an unreasonable interference with the flow of traffic on the county road system.
As added by Acts 1979, P.L.97, SEC.1. Amended by P.L.86-1988, SEC.222; P.L.3-1989, SEC.68.