IRR Program funds cannot be used for any of the following:
(a) Routine maintenance work such as: grading shoulders and ditches; cleaning culverts; snow removal, roadside mowing, normal sign repair and replacement, painting roadway structures, and the maintaining, cleaning, or repair of bridge appurtenances;
(b) Structures and erosion protection unrelated to transportation and roadways;
(c) General reservation planning not involving transportation;
(d) Landscaping and irrigation systems not involving transportation programs and projects;
(e) Work performed on projects that are not included on an FHWA-approved IRR Transportation Improvement Program (TIP), unless otherwise authorized by the Secretary of the Interior and the Secretary of Transportation;
(f) Purchase of equipment unless authorized by Federal law or in this part; or
(g) Condemnation of land for recreational trails.