< Montana
Gravel / Dirt Roads 4x4 Trails
Montana follows the following functional classification for Gravel and Dirt Road /4x4 trails.
Gravel  |
Functional Classification |
|---|---|
| Local/Not Mapped | Street |
| Minor Collector | PS |
| Minor Arterial | Minor |
Dirt Road / 4x4 Trail  |
Functional Classification |
|---|---|
| Local/Not Mapped | Off-road / Not maintained |
| Minor Collector | Off-road / Not maintained |
| Minor Arterial | Off-road / Not maintained |