25 CFR § 170.117
Can TTP funds be used on seasonal transportation routes?
February 24, 2021
Yes. A Tribe may use TTP funds on seasonal transportation routes that are included in the NTTFI.
(a) Information regarding the standards for seasonal transportation routes are found in §170.454. A Tribe can also develop or adopt standards that are equal to or exceed these standards.
(b) To help ensure the safety of the traveling public, construction of a seasonal transportation route requires a right-of-way, easement, or use permit.