Portal:Ultimate Interstates
These pages detail the Indyroads "Ultimate Interstate" plans for the Western Mountain and Central States
West
Primary Routes
Conceptual Corridors
Auxiliary Routes
Central
Primary Routes
Conceptual Corridors
- Corridor 31
- Corridor 32
- Corridor 51
- Corridor 61
- Corridor 67
- I-76 Extension
- Corridor 98
- Tri-State Corridors
- Chicago Interstate Renumbering
Auxiliary Routes
East
Primary Routes
Conceptual Corridors
Auxiliary Routes
South
Primary Routes
Conceptual Corridors
Auxiliary Routes