Indiana Code Title 8. Utilities and Transportation § 8-23-21-2

Sec. 2.  (a) When a state highway that was temporarily closed is reopened to traffic as a public thoroughfare, the department shall place the official detour route in the condition agreed to in writing by the department and the county before the official detour route was designated by the department.

(b) When a state highway that was temporarily closed is reopened to traffic as a public thoroughfare, the department shall restore the route that has been determined as an unofficial detour route to a condition that:

(c) The department is required to restore only one (1) unofficial detour route for each official detour route under this section.

(d) Except as provided in section 4 of this chapter and if the establishment of run arounds is determined to be the most cost effective alternative of all available alternatives, the department shall establish run arounds instead of detours and may install temporary structures or other facilities to render the run arounds usable by persons traveling over the highway.