; and (2) in compliance with existing law (including regulations) applicable to land trades or acquisitions. (c) Report As part of the report required by section 501, the Secretary of Agriculture and the Secretary of the Interior shall describe the progress of cooperative agreements, acquisitions, and proposed land exchanges sought pursuant to this section. 206. Exemption of certain roads and highways (a) Exemption (1) In general The roads and highways described in subsection (b) are expressly exempted from this title. (2) Additional roads If the Secretary concerned determines that any Federal, State, county, or private road has been mistakenly omitted from the list in subsection (b), the Secretary concerned may exempt the road from this title, if the Secretary concerned determines that the exemption is necessary to carry out the purposes of this title. (b) Description The roads and highways referred to in subsection (a) are the following: (1) United States Highways 2, 10, 12, 20, 89, 91, 93, 95, and 287. (2) Interstate Highways 15 and 90. (3) Idaho State Highways 3, 28, 29, and 87. (4) Montana State Highways 2, 37, 38, 41, 43, 56, 58, 83, 87, 135, 200, 278, 287, 293, 294, 298, and 324. (5) Montana Secondary Roads 92, 278, 279, 294, 298, 324, 411, and 508. (6) The Thompson Pass Road, Montana-Idaho. (7) The Moyie Springs to East Port Road, Idaho. (8) The Red Rock Pass Road, Montana. (9) Boundary County, Idaho, Routes 3, 18, 34, and 47. (10) Lolo National Forest Route 102. (11) Gallatin National Forest Route 259. (12) Kelly Canyon and Middle Fork Canyon Roads, Gallatin National Forest. (13) Lewis and Clark County, Montana, Roads 4, 164, 280, 287, and 291. (14) The Beaverhead-Deerlodge to Basin Road, Montana. (15) The Marysville to Avon Road, Montana. (16) The Pahsimeroi Road, Butte County, Idaho. III Wild and scenic rivers designations 301. Designation of wild and scenic rivers in Idaho, Montana, and Wyoming Section 3(a) of the Wild and Scenic Rivers Act ( 16 U.S.C. 1274(a) ) is amended by adding at the end the