25 CFR § 170.611 - What special provisions apply to ISDEAA contracts and agreements?

---
identifier: "/us/cfr/t25/s170.611"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "25 CFR § 170.611 - What special provisions apply to ISDEAA contracts and agreements?"
title_number: 25
title_name: "Indians"
section_number: "170.611"
section_name: "What special provisions apply to ISDEAA contracts and agreements?"
chapter_name: "BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR"
subchapter_number: "H"
subchapter_name: "LAND AND WATER"
part_number: "170"
part_name: "TRIBAL TRANSPORTATION PROGRAM"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Pub. L. 112-141, Pub. L. 114-94; 5 U.S.C. 2; 23 U.S.C. 201, 202; 25 U.S.C. 2, 9."
regulatory_source: "81 FR 78463, Nov. 7, 2016, unless otherwise noted."
cfr_part: "170"
---


# 170.611 What special provisions apply to ISDEAA contracts and agreements?

(a) *Multi-year contracts and agreements.* The Secretary can enter into a multi-year TTP self-determination contract and self-governance agreement with a Tribe under sections 105(c)(1)(A) and (2) of ISDEAA. The amount of the contracts or agreements is subject to the availability of appropriations.

(b) *Consortia.* Under title I and title IV of ISDEAA, Tribes and multi-tribal organizations are eligible to assume TTPs under consortium contracts or agreements. For an explanation of self-determination contracts, refer to title I, 25 U.S.C. 450f. For an explanation of self-governance agreements, see title IV, 25 U.S.C. 450b(l) and 458b(b)(2).

(c) *Advance payments.* The Secretary and the Tribe must negotiate a schedule of advance payments as part of the terms of a self-determination contract under 25 CFR 900.132.

(d) *Design and construction contracts.* The Secretary can enter into a design/construct TTP self-determination contract that includes both the design and construction of one or more TTP projects. The Secretary may make advance payments to a Tribe:

(1) Under a self-determination design/construct contract for construction activities based on progress, need, and the payment schedule negotiated under 25 CFR 900.132; and

(2) Under a self-governance agreement in the form of annual or semiannual installments as indicated in the agreement.