- ...that New Jersey Route 31 and Utah State Route 38 were both renumbered from "Route 69" due to sign theft that resulted from the sexual meaning of the number 69?
- ... that New Jersey Route 88 was referred to in the Bruce Springsteen song "Spirit in the Night"?
- ... that Washington State Route 231 is almost 9 miles (14 km) longer than its "parent" route, Washington State Route 23?
- ... the creator of the sculpture Metaphor: The Tree of Utah (pictured) was inspired by the long, straight, desolate stretch of Interstate 80 across the Bonneville Salt Flats?
- ...that what is now U.S. Route 30 in New Jersey was originally chartered as the White Horse Pike in 1854, a turnpike that was to run from Camden to Stratford and eventually to Atlantic City?
