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Title 25

Displaying title 25, up to date as of 10/15/2026. Title 25 was last amended 12/01/2025.
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Title 25IndiansPart / Section
Chapter IBureau of Indian Affairs, Department of the Interior1 – 299
Subchapter HLand and Water150 – 183
Part 170Tribal Transportation Program170.1 – 170.942
Subpart EService Delivery for Tribal Transportation Program170.600 – 170.627
Funding Process170.600 – 170.602
§ 170.600What must BIA include in the notice of funds availability?
§ 170.602If a Tribe incurs unforeseen construction costs, can it get additional funds?
Miscellaneous Provisions170.605 – 170.609
§ 170.605May BIA or FHWA use force-account methods in the TTP?
§ 170.606How do legislation and procurement requirements affect the TTP?
§ 170.607Can a Tribe use its allocation of TTP funds for contract support costs?
§ 170.608Can a Tribe pay contract support costs from DOI or BIA appropriations?
§ 170.609Can a Tribe receive additional TTP funds for start-up activities?
Contracts and Agreements170.610 – 170.627
§ 170.610Which TTP functions may a Tribe assume?
§ 170.611What special provisions apply to ISDEAA contracts and agreements?
§ 170.612Can non-contractible functions and activities be included in contracts or agreements?
§ 170.613What funds are used to pay for non-contractible functions and activities?
§ 170.614Can a Tribe receive funds before BIA publishes the final notice of funding availability?
§ 170.615Can a Tribe receive advance payments for non-construction activities under the TTP?
§ 170.616How are payments made to Tribes if additional funds are available?
§ 170.617May a Tribe include a contingency in its proposal budget?
§ 170.618Can a Tribe keep savings resulting from project administration?
§ 170.619Do Tribal preference and Indian preference apply to TTP funding?
§ 170.620How do ISDEAA's Indian preference provisions apply?
§ 170.621What if a Tribe doesn't perform work under a contract or agreement?
§ 170.622What TTP functions, services, and activities are subject to the self-governance construction regulations?
§ 170.623How are TTP projects and activities included in a self-governance agreement?
§ 170.624Is technical assistance available?
§ 170.625What regulations apply to waivers?
§ 170.626How does a Tribe request a waiver of a Department of Transportation regulation?
§ 170.627Can non-TTP funds be provided to a Tribe through an FHWA Program Agreement, BIA TTP Agreement or other appropriate agreement?
Appendix to Subpart E of Part 170
List of Program Functions That Cannot Be Subcontracted