A map of the United States Interstate Highway System, formally known as the Dwight D. Eisenhower System of Interstate and Defense Highways. Intersections between two or more interstates form the territories. Bonuses are determined by sections of interstate between two adjacent territories, and by complete interstates.
Some primary interstates (I-2, I-11, I-14, I-73, I-87 in North Carolina, and I-97) are omitted from this map because they are too short or not yet complete. The incomplete sections of I-69 and I-74 are also not present. Most secondary interstates have also been omitted for simplicity, except for a few (I-135, I-196, I-390, I-476, and I-580) which serve as important connections.