Whenever the department, under the authority of section 39-1345, permits the public use of a highway undergoing construction, repair, or maintenance in lieu of a detour route, the contractor shall not be held responsible for damages to those portions of the project upon which the department has permitted public use, when such damages are the result of no proximate act or failure to act on the part of the contractor.
Neb. Rev. Stat. §§ 39-1345.01