To establish policy and provide program guidance for the administration of emergency funds for the repair or reconstruction of Federal-aid highways, which are found to have suffered serious damage by natural diasters over a wide area or serious damage from catastrophic failures. Guidance for application by Federal agencies for reconstruction of Federal roads that are not part of the Federal-aid highways is contained in 23 CFR part 668, subpart B.
23 C.F.R. §668.101