Neb. Rev. Stat. § 18-635: Neb. Rev. Stat. § 18-635

Nothing in sections 18-617 to 18-636 shall modify, change, or abrogate any obligation of any railroad company or companies to maintain, reconstruct, or keep in repair any viaduct or subway previously built or any replacement of such viaduct or subway under any agreement, statute, or ordinance previously in effect.