| Mainline Interstate Highways | Total Miles | State | % Correct |
|---|---|---|---|
| I-5, I-8, I-10, I-15, I-40, I-80 | 2,456 | California | 98%
|
| I-2, I-10, I-14, I-20, I-27, I-30, I-35, I-35E, I-35W, I-37, I-40, I-44, I-45, I-69, I-69C, I-69E, I-69W | 3,504 | Texas | 98%
|
| I-78, I-81, I-84, I-86, I-87, I-88, I-90, I-95, I-99 | 1,730 | New York | 85%
|
| I-4, I-10, I-75, I-95 | 1,498 | Florida | 83%
|
| I-24, I-39, I-41, I-55, I-57, I-64, I-72, I-74, I-80, I-88, I-90, I-94 | 2,203 | Illinois | 83%
|
| I-70, I-76, I-78, I-79, I-80, I-81, I-83, I-84, I-86, I-90, I-95, I-99 | 1,862 | Pennsylvania | 83%
|
| I-70, I-71, I-74, I-75, I-76, I-77, I-80, I-90 | 1,572 | Ohio | 81%
|
| A-1, A-2, A-3, A-4 | 1,082 | Alaska | 78%
|
| I-64, I-65, I-69, I-70, I-74, I-80, I-90, I-94 | 1,307 | Indiana | 76%
|
| I-16, I-20, I-24, I-59, I-75, I-85, I-95 | 1,244 | Georgia | 75%
|
| I-26, I-40, I-73, I-74, I-77, I-85, I-87, I-95 | 1,365 | North Carolina | 75%
|
| I-69, I-75, I-94, I-96 | 1,241 | Michigan | 73%
|
| I-15, I-90, I-94 | 1,191 | Montana | 73%
|
| I-64, I-66, I-77, I-81, I-85, I-95 | 1,117 | Virginia | 73%
|
| I-8, I-10, I-15, I-17, I-19, I-40 | 1,169 | Arizona | 71%
|
| I-29, I-35, I-44, I-49, I-55, I-57, I-64, I-70, I-72 | 1,386 | Missouri | 71%
|
| I-24, I-26, I-40, I-55, I-65, I-69, I-75, I-81 | 1,201 | Tennessee | 71%
|
| H-1, H-2, H-3 | 55 | Hawaii | 68%
|
| I-10, I-25, I-40 | 1,000 | New Mexico | 68%
|
| I-10, I-20, I-22, I-59, I-65, I-85 | 1,001 | Alabama | 66%
|
| I-95 | 41 | Delaware | 63%
|
| I-25, I-70, I-76 | 952 | Colorado | 59%
|
| I-35, I-70 | 874 | Kansas | 59%
|
| I-35, I-35E, I-35W, I-90, I-94 | 913 | Minnesota | 59%
|
| I-95 | 69 | Rhode Island | 59%
|
| I-20, I-26, I-77, I-85, I-95 | 847 | South Carolina | 59%
|
| I-15, I-70, I-80, I-84 | 937 | Utah | 59%
|
| I-5, I-82, I-90 | 764 | Washington | 59%
|
| I-25, I-80, I-90 | 914 | Wyoming | 59%
|
| I-24, I-64, I-65, I-69, I-71, I-75 | 913 | Kentucky | 58%
|
| I-10, I-12, I-20, I-49, I-55, I-59 | 934 | Louisiana | 58%
|
| I-35, I-40, I-44 | 930 | Oklahoma | 58%
|
| I-84, I-91, I-95 | 346 | Connecticut | 56%
|
| I-29, I-35, I-80, I-90 | 781 | Iowa | 56%
|
| I-84, I-90, I-91, I-93, I-95 | 566 | Massachusetts | 56%
|
| I-10, I-20, I-22, I-55, I-59, I-69 | 831 | Mississippi | 56%
|
| I-11, I-15, I-80 | 624 | Nevada | 56%
|
| I-5, I-82, I-84 | 727 | Oregon | 56%
|
| I-89, I-91, I-93 | 320 | Vermont | 56%
|
| I-95 | 366 | Maine | 54%
|
| I-89, I-93, I-95 | 225 | New Hampshire | 54%
|
| I-64, I-68, I-70, I-77, I-79, I-81 | 549 | West Virginia | 54%
|
| I-66, I-95 | 12 | District of Columbia | 53%
|
| I-29, I-90 | 678 | South Dakota | 53%
|
| I-68, I-70, I-81, I-83, I-95, I-97 | 481 | Maryland | 51%
|
| I-39, I-41, I-43, I-90, I-94 | 742 | Wisconsin | 51%
|
| I-30, I-40, I-49, I-55 | 750 | Arkansas | 49%
|
| I-15, I-84, I-86, I-90 | 612 | Idaho | 49%
|
| I-76, I-78, I-80, I-95 | 431 | New Jersey | 49%
|
| I-29, I-94 | 571 | North Dakota | 49%
|
| I-76, I-80 | 482 | Nebraska | 47%
|