; and (B) the maintenance and reconstruction of existing permanent roads and trails, including the relocation of segments of existing roads and trails to address resource impacts. (2) Temporary roads Any temporary road constructed for a forest management activity covered by the categorical exclusion established by subsection (a) shall be decommissioned not later than 3 years after the date on which the project is completed. 8317. Categorical exclusion for infrastructure forest management activities (a) Categorical exclusion established Forest management activities described in subsection (b) are a category of actions hereby designated as being categorically excluded from the preparation of an environmental assessment or an environmental impact statement under section 102 of the National Environmental Policy Act of 1969 ( 42 U.S.C. 4332 ). (b) Forest management activities designated for categorical exclusion The category of forest management activities designated under this section for categorical exclusion are forest management activities carried out by the Secretary of Agriculture on National Forest System lands where the primary purpose of such activity is— (1) constructing, reconstructing, or decommissioning National Forest System roads not exceeding 3 miles; (2) adding an existing road to the forest transportation system; (3) reclassifying a National Forest System road at a different maintenance level; (4) reconstructing, rehabilitating, or decommissioning bridges; (5) removing dams