Section 661.17 - What are the criteria for bridge eligibility?(a) For bridge replacement or rehabilitation, TTF bridges are required to meet the following: (1) Must meet the definition of a TTF bridge;(2) Be classified as a Tribal transportation facility;(3) Be classified as in poor condition, have low load capacity, or need highway geometric improvements;(4) Be recorded in the NBI maintained by FHWA;(b) For new bridge construction, TTF bridges are required to meet the following:(1) Be classified as a Tribal transportation facility;(2) Be a public bridge that meets the definition of a TTF bridge and recorded in the NBI after project completion.