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Filters: Tags: Highways (X) > Date Range: {"choice":"year"} (X)

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This layer represents the major road network of the U.S. Northern Rockies. It was created by merging Montana Department of Transportation "on-system" routes with Idaho Transportation Department "state highway system" routes, creating consistent attribute fields, then clipping to the U.S. Northern Rockies study area boundary.
All secondary roads in the western United States from the 2000 US Census TIGER/line files. Secondary roads are defined as all roadways not classified as an interstate, state highway, or federal highway.


    map background search result map search result map U.S. Northern Rockies Major Roads All Secondary Roads in the Western United States U.S. Northern Rockies Major Roads All Secondary Roads in the Western United States