Designating the Urban Interstates
Proposed Rural routes totaling 26,700 miles of Interregional Highway
Location of routes tentatively selected as approximating the line of a proposed Interregional Highway system.
U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Location of routes tentatively selected as approximating the line of a proposed Interregional Highway system.