| Route | Interstate Highway Number |
| Cleveland, OH; Charlotte, NC; Charleston, SC | |
| Nashville, TN; Oklahoma City, OK; Flagstaff, AZ | |
| Boston, MA; Philadelphia, PA; Jacksonville, FL | |
| Grand Rapids, MI; Detroit, MI | |
| Galveston, TX; Houston, TX; Dallas, TX | |
| San Diego, CA; Sacramento, CA; Seattle, WA | |
| Flagstaff, AZ; Phoenix, AZ | |
| Tampa, FL; Orlando, FL; Daytona Beach, FL | |
| | Route | Interstate Highway Number |
| Los Angeles, CA; El Paso, TX; Baton Rouge, LA | |
| Atlanta, GA; Dallas, TX; El Paso, TX | |
| Chicago, IL; St. Louis, MO; Memphis, TN | |
| Harrisburg, PA; Scranton, PA; Syracuse, NY | |
| Detroit, MI; Knoxville, TN; Atlanta, GA | |
| Mobile, AL; Nashville, TN; Gary, IN | |
| Butte, MT; Chicago, IL; Boston, MA | |
| Little Rock, AR; Texarkana, TX; Dallas, TX | |
|