Tribal Transportation Program (TTP)

The Tribal Transportation Program (TTP) is the largest program in the Office of Federal Lands Highway. Established in 23 U.S.C. 202 to address the transportation needs of Tribal governments throughout the United States, the program receives $450,000,000 annually to provide safe and adequate transportation and public road access to and within Indian reservations, Indian lands, and Alaska Native Village communities. A prime objective of the TTP is to contribute to the economic development, self-determination, and employment of Indians and Native Americans.

The Tribal Transportation Program is funded by contract authority from the Highway Trust Fund and is subject to the overall Federal-aid obligation limitation. Funds are allocated among Tribes using a new statutory formula based on tribal population, road mileage and average tribal shares of the former Tribal Transportation Allocation Methodology (TTAM) formula.

What's New?

Look here frequently to find the latest information about the TTP such as MAP-21 updates, and the status of Continuing Resolutions (CRs); Tribal Share Allocation letters; Safety Fund Notices of Funding Availability (NOFAs); press releases; webinars and other technical assistance; and updates to information such as 25CFR170, etc.

  • 25 CFR 170 Notice of Proposed Rulemaking (NPRM)

    On Friday, December 12, 2014, the proposed rule for 25 CFR Part 170 was submitted to the Federal Register for publication. BIA's Office of Regulatory and Collaborative Affairs (RACA) advises that it should be printed next week or very early the week following. We will send a follow-up email with a link to the rule as printed in the Federal Register when it's available.

    Meanwhile, the proposed rule is available for review at the following web site, along with a letter from the Assistant Secretary - Indian Affairs Kevin Washburn, announcing the proposed rule and consultation dates and locations:

    Consultation dates, locations, and venues, along with additional information about how to submit comments on the rule are available at BIA - RACA's consultation web site at

  • FY15 TTP Tribal shares and 2% Planning funds - 72 day CR through December 11, 2015  (Acrobat, 111 KB)

TTP Sections