OK, Chicago cartography fans. Name a pair of streets in Chicago that intersect each other twice.
Our answer: Sheridan and Broadway.
Sheridan and Broadway meet in Lake View where the northbound Sheridan makes a 90 degree turn and goes all lateral, crossing its soulmate.
Sheridan and Broadway also meet four miles north in Rogers Park, a ricochet that sends Devon west and Sheridan northward.
Chicago is such a large city (234 square miles) that there may just be another pair of road warriors. If you know of one, let us know, too!