Indiana Code Title 8. Utilities and Transportation § 8-23-21-0.5

Sec. 0.5. As used in this chapter, “unofficial detour route” means the path that the department in conjunction with local officials determines many motorists have taken or are likely to take in place of the official detour route because the path is or was:

than the official detour route or other means the department has prescribed for a motorist to reach a destination while a state highway, part of a state highway, or state highway bridge is closed to the public as a thoroughfare while under construction or while being repaired by the department.