(1)Use the approved standards referred to in § 170.454; or
(2)Request approval for any other road and highway bridge construction standards that are consistent with or exceed the standards referred to in § 170.454.
(b)For designing and building eligible intermodal projects funded by the TTP, Tribes must use either:
(1)Nationally recognized standards for comparable projects; or
(2)Tribally adopted standards that meet or exceed nationally recognized standards for comparable projects.