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This feature class contains road data derived from applying Infra data to a national forest's road GIS data. Infrastructure (Infra) is a collection of applications which house information related to an assets managed by the Forest Service (including but not limited to, Roads, Bridges, Buildings, Water Systems, Waste Water Systems, Dams, Trails, and Recreation Sites). The feature class contains records for all roads that are in each database and are correctly configured. This data would include only existing roads, ones that permit motorized use as well as those that do not. For roads that are legally open for motorized use, it identifies the authorized modes of travel and season of use. This data may not represent a forest's currently published Motor Vehicle Use Map (MVUM). This feature class is derived from the Infra table II_MVUM_ROAD_ALLOW. Access and Travel Management (ATM) data included is pulled from the Allowed Uses tab in the Infra ATM for Roads form. Since this feature class is a current snapshot of Infra data, it is different than the currently published MVUM data and thus is for internal use only, primarily for review of Infra data during development or update of MVUM. This feature class will not be published for public use.
The feature class indicates the specific types of motorized vehicles allowed on the designated routes and their seasons of use. The feature class is designed to be consistent with the Motor Vehicle Use Map (MVUM). Only roads with a SYMBOL attribute value of 1, 2, 3, 4, 11, and 12 are Forest Service System roads and contain data concerning their availability for OHV (Off Highway Vehicle) use. This data is published and refreshed on a unit by unit basis as needed. Information for each individual unit must be verified as to be consistent with the published MVUMs prior to inclusion in this data. Not every National Forest has data included in this feature class.