| Federal Aid Interstate |
| State Highway |
| F.A.U. Maintained |
| F.A.S. Maintained |
| Paved Surface Maintained |
| Paved Surface (CREF) |
| Graveled Surface Maintained |
| Graveled Surface (CREF) |
| Dirt Surface Maintained |
| Dirt Surface (CREF) |
| Accepted for Public Use |
| Non-County/Accepted for Public Use |
| Non-County Road |
| Vacated |
| Abandoned |
| F.A.U. Maintained/Non-County |
| F.A.S. Maintained/Non-County |
| Paved Surface Maintained/Accepted |
| Paved Surface Maintained/Non-County |
| Paved Surface Maintained/Vacated |
| Graveled Surface Maintained/Accepted |
| Graveled Surface Maintained/Non-County |
| Graveled Surface Maintained/Vacated |
| Dirt Surface Maintained/Accepted |
| Dirt Surface Maintained/Non-County |
| Dirt Surface Maintained/Vacated |
| Accepted for Public Use/Vacated |
| Maintained Under Contract |
| City Road |
| Paved Maintained/Dirt Maintained |
| Dedicated and Accepted - CSD Maintained |
| Undefined |
| Maintained for City |
| Maintained for City/Non-County |
| Maintained for City/Non-County (Reversed) |
| Maintained for City/Accepted |
| F.A.U. Maintained/Maintained for City |
| Dirt Surface Maintained/Maintained for City |
| Graveled Surface Maintained/Maintained for City |
| Paved Surface Maintained/Maintained for City |
| Traffic Division Modeling Reference Use Only |
| <all other values> |
