[Code of Federal Regulations] [Title 23, Volume 1] [Revised as of April 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 23CFR661.29] [Page 322] TITLE 23--HIGHWAYS CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 661--INDIAN RESERVATION ROAD BRIDGE PROGRAM--Table of Contents Sec. 661.29 When is a bridge eligible for rehabilitation? To be eligible for rehabilitation, the bridge must be considered deficient for reasons of structural deficiency or functional obsolescence. Also, the bridge must have a sufficiency rating of less than or equal to 80 to be eligible for rehabilitation. A bridge would be eligible for replacement if the total life cycle cost for bridge rehabilitation exceeds the costs to replace.